Jamir Robertson

27 Jamir Robertson

Height:

5-9
Weight:

190
Hometown:

Philadelphia, PA
Position:

RB
Year:

R-Fr.
High School:

Roman Catholic

gp

9
tk

0.0
sac

0.0
int

0
ffum

0

Bio

2023: Played in three games ... Carried the ball once for four yards at Brown ... Made his first collegiate kick return versus Delaware State, scampering 22 yards ...

Prior to CCSU: Named First Team All Catholic 5A ... Earned Roman Catholic HS 'Mr. Versatility' Award for top athlete.

Player statistics

	Overall	Conference
Solo tackles	0	-
Assists	0	-
Tackles	0.0	0.0
Tackles per game	.0	.0
Sacks	0.0	-
Sack yards	0	-
Interceptions	0	-
Returned for touchdown	-	-
Fumble recoveries	0	-
Fumble return TDs	-	-
Tackle for loss	0.0	0.0
Tackle for loss yards	0	-

Recent results

Recent Games
Date	Opponent	Result
Oct 26	at LIU	L, 24-21
Nov 2	Wagner	W, 24-14
Nov 9	at Stonehill	W, 21-17
Nov 16	Robert Morris	W, 35-33
Nov 23	Duquesne	W, 21-14
Nov 30	at Rhode Island	L, 21-17

Game Log - Defense
Date	Opponent	Score	comp	att	pct	yds	y/a	td	int	sac	yds
Aug 29	at Central Mich.	L, 66-10	-	-	-	-	-	-	-	-	-
Sep 7	Fordham	W, 33-3	-	-	-	-	-	-	-	-	-
Sep 14	at Saint Francis U.	W, 27-20	-	-	-	-	-	-	-	-	-
Sep 21	at Massachusetts	L, 35-31	-	-	-	-	-	-	-	-	-
Oct 5	at Yale	L, 23-22	-	-	-	-	-	-	-	-	-
Oct 12	Mercyhurst	W, 38-20	-	-	-	-	-	-	-	-	-
Oct 19	at Dartmouth	L, 20-16	-	-	-	-	-	-	-	-	-
Oct 26	at LIU	L, 24-21	-	-	-	-	-	-	-	-	-
Nov 2	Wagner	W, 24-14	-	-	-	-	-	-	-	-	-
Nov 9	at Stonehill	W, 21-17	-	-	-	-	-	-	-	-	-
Nov 16	Robert Morris	W, 35-33	-	-	-	-	-	-	-	-	-
Nov 23	Duquesne	W, 21-14	-	-	-	-	-	-	-	-	-
Nov 30	at Rhode Island	L, 21-17	-	-	-	-	-	-	-	-	-

Game Log - Defense
Date	Opponent	Score	rush	yds	y/a	lng	td	fum	lost
Aug 29	at Central Mich.	L, 66-10	1	12	12.0	12	0	-	-
Sep 7	Fordham	W, 33-3	1	-2	-2.0	0	0	-	-
Sep 14	at Saint Francis U.	W, 27-20	-	-	-	-	-	-	-
Sep 21	at Massachusetts	L, 35-31	3	23	7.7	11	0	-	-
Oct 5	at Yale	L, 23-22	3	18	6.0	14	0	-	-
Oct 12	Mercyhurst	W, 38-20	-	-	-	-	-	-	-
Oct 19	at Dartmouth	L, 20-16	-	-	-	-	-	-	-
Oct 26	at LIU	L, 24-21	-	-	-	-	-	-	-
Nov 2	Wagner	W, 24-14	1	2	2.0	2	0	-	-
Nov 9	at Stonehill	W, 21-17	-	-	-	-	-	-	-
Nov 16	Robert Morris	W, 35-33	1	-1	-1.0	0	0	-	-
Nov 23	Duquesne	W, 21-14	-	-	-	-	-	-	-
Nov 30	at Rhode Island	L, 21-17	-	-	-	-	-	-	-

Game Log - Defense
Date	Opponent	Score	rec	yds	y/r	lng	td	fum	lost
Aug 29	at Central Mich.	L, 66-10	2	25	12.5	26	0	-	-
Sep 7	Fordham	W, 33-3	-	-	-	-	-	-	-
Sep 14	at Saint Francis U.	W, 27-20	1	8	8.0	8	0	-	-
Sep 21	at Massachusetts	L, 35-31	1	7	7.0	7	0	-	-
Oct 5	at Yale	L, 23-22	1	49	49.0	49	1	-	-
Oct 12	Mercyhurst	W, 38-20	-	-	-	-	-	-	-
Oct 19	at Dartmouth	L, 20-16	-	-	-	-	-	-	-
Oct 26	at LIU	L, 24-21	-	-	-	-	-	-	-
Nov 2	Wagner	W, 24-14	-	-	-	-	-	-	-
Nov 9	at Stonehill	W, 21-17	-	-	-	-	-	-	-
Nov 16	Robert Morris	W, 35-33	-	-	-	-	-	-	-
Nov 23	Duquesne	W, 21-14	-	-	-	-	-	-	-
Nov 30	at Rhode Island	L, 21-17	-	-	-	-	-	-	-

Game Log - Defense
Date	Opponent	Score	fgm	fga	lng	xpm	xpa	pts
Aug 29	at Central Mich.	L, 66-10	-	-	-	-	-	0
Sep 7	Fordham	W, 33-3	-	-	-	-	-	0
Sep 14	at Saint Francis U.	W, 27-20	-	-	-	-	-	0
Sep 21	at Massachusetts	L, 35-31	-	-	-	-	-	0
Oct 5	at Yale	L, 23-22	-	-	-	-	-	0
Oct 12	Mercyhurst	W, 38-20	-	-	-	-	-	-
Oct 19	at Dartmouth	L, 20-16	-	-	-	-	-	-
Oct 26	at LIU	L, 24-21	-	-	-	-	-	-
Nov 2	Wagner	W, 24-14	-	-	-	-	-	0
Nov 9	at Stonehill	W, 21-17	-	-	-	-	-	-
Nov 16	Robert Morris	W, 35-33	-	-	-	-	-	0
Nov 23	Duquesne	W, 21-14	-	-	-	-	-	0
Nov 30	at Rhode Island	L, 21-17	-	-	-	-	-	0

Game Log - Defense
Date	Opponent	Score	punt	yds	avg	long	in20	fc	tb	blk
Aug 29	at Central Mich.	L, 66-10	-	-	-	-	-	-	-	-
Sep 7	Fordham	W, 33-3	-	-	-	-	-	-	-	-
Sep 14	at Saint Francis U.	W, 27-20	-	-	-	-	-	-	-	-
Sep 21	at Massachusetts	L, 35-31	-	-	-	-	-	-	-	-
Oct 5	at Yale	L, 23-22	-	-	-	-	-	-	-	-
Oct 12	Mercyhurst	W, 38-20	-	-	-	-	-	-	-	-
Oct 19	at Dartmouth	L, 20-16	-	-	-	-	-	-	-	-
Oct 26	at LIU	L, 24-21	-	-	-	-	-	-	-	-
Nov 2	Wagner	W, 24-14	-	-	-	-	-	-	-	-
Nov 9	at Stonehill	W, 21-17	-	-	-	-	-	-	-	-
Nov 16	Robert Morris	W, 35-33	-	-	-	-	-	-	-	-
Nov 23	Duquesne	W, 21-14	-	-	-	-	-	-	-	-
Nov 30	at Rhode Island	L, 21-17	-	-	-	-	-	-	-	-

Game Log - Defense
Date	Opponent	Score	kr	yds	avg	lng	td	pr	yds	avg	lng	td
Aug 29	at Central Mich.	L, 66-10	-	-	-	-	-	-	-	-	-	-
Sep 7	Fordham	W, 33-3	-	-	-	-	-	-	-	-	-	-
Sep 14	at Saint Francis U.	W, 27-20	-	-	-	-	-	-	-	-	-	-
Sep 21	at Massachusetts	L, 35-31	-	-	-	-	-	-	-	-	-	-
Oct 5	at Yale	L, 23-22	-	-	-	-	-	-	-	-	-	-
Oct 12	Mercyhurst	W, 38-20	-	-	-	-	-	-	-	-	-	-
Oct 19	at Dartmouth	L, 20-16	-	-	-	-	-	-	-	-	-	-
Oct 26	at LIU	L, 24-21	-	-	-	-	-	-	-	-	-	-
Nov 2	Wagner	W, 24-14	-	-	-	-	-	-	-	-	-	-
Nov 9	at Stonehill	W, 21-17	-	-	-	-	-	-	-	-	-	-
Nov 16	Robert Morris	W, 35-33	-	-	-	-	-	-	-	-	-	-
Nov 23	Duquesne	W, 21-14	-	-	-	-	-	-	-	-	-	-
Nov 30	at Rhode Island	L, 21-17	-	-	-	-	-	-	-	-	-	-

Game Log - Defense
Date	Opponent	Score	gp	rush	rcv	pr	kr	yds
Aug 29	at Central Mich.	L, 66-10	1	12	25	-	-	37
Sep 7	Fordham	W, 33-3	1	-2	-	-	-	-2
Sep 14	at Saint Francis U.	W, 27-20	1	-	8	-	-	8
Sep 21	at Massachusetts	L, 35-31	1	23	7	-	-	30
Oct 5	at Yale	L, 23-22	1	18	49	-	-	67
Oct 12	Mercyhurst	W, 38-20	-	-	-	-	-	-
Oct 19	at Dartmouth	L, 20-16	-	-	-	-	-	-
Oct 26	at LIU	L, 24-21	-	-	-	-	-	-
Nov 2	Wagner	W, 24-14	1	2	-	-	-	2
Nov 9	at Stonehill	W, 21-17	-	-	-	-	-	-
Nov 16	Robert Morris	W, 35-33	1	-1	-	-	-	-1
Nov 23	Duquesne	W, 21-14	1	-	-	-	-	0
Nov 30	at Rhode Island	L, 21-17	1	-	-	-	-	0

Game Log - Defense
Date	Opponent	Score	pts	rush	rec	kr	pr	int	fum	xpm	fgm	saf	misc	2pt
Aug 29	at Central Mich.	L, 66-10	0	0	0	-	-	-	-	-	-	-	0	-
Sep 7	Fordham	W, 33-3	0	0	-	-	-	-	-	-	-	-	0	-
Sep 14	at Saint Francis U.	W, 27-20	0	-	0	-	-	-	-	-	-	-	0	-
Sep 21	at Massachusetts	L, 35-31	0	0	0	-	-	-	-	-	-	-	0	-
Oct 5	at Yale	L, 23-22	6	0	1	-	-	-	-	-	-	0	0	0
Oct 12	Mercyhurst	W, 38-20	-	-	-	-	-	-	-	-	-	-	-	-
Oct 19	at Dartmouth	L, 20-16	-	-	-	-	-	-	-	-	-	-	-	-
Oct 26	at LIU	L, 24-21	-	-	-	-	-	-	-	-	-	-	-	-
Nov 2	Wagner	W, 24-14	0	0	-	-	-	-	-	-	-	-	0	-
Nov 9	at Stonehill	W, 21-17	-	-	-	-	-	-	-	-	-	-	-	-
Nov 16	Robert Morris	W, 35-33	0	0	-	-	-	-	-	-	-	-	0	-
Nov 23	Duquesne	W, 21-14	0	-	-	-	-	-	-	-	-	-	0	-
Nov 30	at Rhode Island	L, 21-17	0	-	-	-	-	-	-	-	-	-	0	-

Game Log - Defense
Date	Opponent	Score	tack	ast	tot	sack	lost	tfl	yds	ff	fr	td	int	yds	td	brup	blk	saf
Aug 29	at Central Mich.	L, 66-10	-	-	0.0	-	-	0.0	-	-	-	-	-	-	-	-	-	-
Sep 7	Fordham	W, 33-3	-	-	0.0	-	-	0.0	-	-	-	-	-	-	-	-	-	-
Sep 14	at Saint Francis U.	W, 27-20	-	-	0.0	-	-	0.0	-	-	-	-	-	-	-	-	-	-
Sep 21	at Massachusetts	L, 35-31	-	-	0.0	-	-	0.0	-	-	-	-	-	-	-	-	-	-
Oct 5	at Yale	L, 23-22	0	0	0.0	0.0	0	0.0	0	0	0	-	0	0	-	0	0	0
Oct 12	Mercyhurst	W, 38-20	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Oct 19	at Dartmouth	L, 20-16	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Oct 26	at LIU	L, 24-21	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Nov 2	Wagner	W, 24-14	-	-	0.0	-	-	0.0	-	-	-	-	-	-	-	-	-	-
Nov 9	at Stonehill	W, 21-17	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Nov 16	Robert Morris	W, 35-33	-	-	0.0	-	-	0.0	-	-	-	-	-	-	-	-	-	-
Nov 23	Duquesne	W, 21-14	-	-	0.0	-	-	0.0	-	-	-	-	-	-	-	-	-	-
Nov 30	at Rhode Island	L, 21-17	-	-	0.0	-	-	0.0	-	-	-	-	-	-	-	-	-	-

Career Stats - Passing
Statistic	gp	comp	att	pct	yds	y/g	y/a	td	int	lg
2023-24	4	-	-	-	-	-	-	-	-	-
2024-25	9	-	-	-	-	-	-	-	-	-
Total	13	-	-	-	-	-	-	-	-	-

Career Stats - Rushing
Statistic	gp	rush	yds	y/g	avg	lg	fum	lost
2023-24	4	2	5	1.3	2.5	4	-	-
2024-25	9	10	52	5.8	5.2	14	-	-
Total	13	12	57	4.4	4.8	14	-	-

Career Stats - Receiving
Statistic	gp	rec	rec/g	yds	y/g	avg	td	lg
2023-24	4	-	-	-	-	-	-	-
2024-25	9	5	0.6	89	9.9	17.8	1	49
Total	13	5	0.4	89	6.8	17.8	1	49

Career Stats - Kicking
Statistic	gp	fgm	fga	pct	lg	xpm	xpa	pct
2023-24	4	-	-	-	-	-	-	-
2024-25	9	-	-	-	-	-	-	-
Total	13	-	-	-	-	-	-	-

Career Stats - Punting
Statistic	gp	punt	yds	avg	lg	in20	fc	tb	blk
2023-24	4	-	-	-	-	-	-	-	-
2024-25	9	-	-	-	-	-	-	-	-
Total	13	-	-	-	-	-	-	-	-

Career Stats - Returns
Statistic	kr	yds	avg	td	lg	pr	yds	avg	td	lg
2023-24	1	22	22.0	0	22	-	-	-	-	-
2024-25	-	-	-	-	-	-	-	-	-	-
Total	1	22	22.0	0	22	-	-	-	-	-

Career Stats - All-Purpose
Statistic	gp	rush	rcv	pr	kr	yds	ypg
2023-24	4	5	-	-	22	27	6.8
2024-25	9	52	89	-	-	141	15.7
Total	13	57	89	-	22	168	12.9

Career Stats - Scoring
Statistic	pts	pts/g	rec	kr	pr	int	fum	xpm	fgm	2pt
2023-24	0	0.0	-	0	-	-	-	-	-	-
2024-25	6	0.7	1	-	-	-	-	-	-	0
Total	6	0.5	1	0	-	-	-	-	-	0

Career Stats - Defense
Statistic	gp	tkl	ast	tkl/g	sck	yds	yds	ff	fr	yds	int	yds	brup	blk
2023-24	4	-	-	.0	-	-	-	-	-	-	-	-	-	-
2024-25	9	0	0	.0	0.0	0	0	0	0	0	0	0	0	0
Total	13	0	0	.0	0.0	0	0	0	0	0	0	0	0	0

Split Stats - Passing
Statistic	gp	comp	att	pct	yds	y/g	y/a	td	int	lg	effic
Event
Total	9	-	-	-	-	-	-	-	-	-	0.0
Conference	4	-	-	-	-	-	-	-	-	-	0.0
Exhibition	-	-	-	-	-	-	-	-	-	-	0.0
Location
Home	4	-	-	-	-	-	-	-	-	-	0.0
Away	5	-	-	-	-	-	-	-	-	-	0.0
Neutral	-	-	-	-	-	-	-	-	-	-	0.0
Result
Wins	5	-	-	-	-	-	-	-	-	-	0.0
Losses	4	-	-	-	-	-	-	-	-	-	0.0
Month
August	1	-	-	-	-	-	-	-	-	-	0.0
September	3	-	-	-	-	-	-	-	-	-	0.0
October	1	-	-	-	-	-	-	-	-	-	0.0
November	4	-	-	-	-	-	-	-	-	-	0.0

Split Stats - Rushing
Statistic	gp	rush	yds	y/g	avg	td	lg	fum	lost
Event
Total	9	10	52	5.8	5.2	0	14	-	-
Conference	4	2	1	0.3	0.5	0	2	-	-
Exhibition	-	-	-	-	-	-	-	-	-
Location
Home	4	3	-1	-0.3	-0.3	0	2	-	-
Away	5	7	53	10.6	7.6	0	14	-	-
Neutral	-	-	-	-	-	-	-	-	-
Result
Wins	5	3	-1	-0.2	-0.3	0	2	-	-
Losses	4	7	53	13.3	7.6	0	14	-	-
Month
August	1	1	12	12.0	12.0	0	12	-	-
September	3	4	21	7.0	5.3	0	11	-	-
October	1	3	18	18.0	6.0	0	14	-	-
November	4	2	1	0.3	0.5	0	2	-	-

Split Stats - Receiving
Statistic	gp	rec	rec/g	yds	y/g	avg	td	lg
Event
Total	9	5	0.6	89	9.9	17.8	1	49
Conference	4	1	0.3	8	2.0	8.0	0	8
Exhibition	-	-	-	-	-	-	-	-
Location
Home	4	-	-	-	-	-	-	-
Away	5	5	1.0	89	17.8	17.8	1	49
Neutral	-	-	-	-	-	-	-	-
Result
Wins	5	1	0.2	8	1.6	8.0	0	8
Losses	4	4	1.0	81	20.3	20.3	1	49
Month
August	1	2	2.0	25	25.0	12.5	0	26
September	3	2	0.7	15	5.0	7.5	0	8
October	1	1	1.0	49	49.0	49.0	1	49
November	4	-	-	-	-	-	-	-

Split Stats - Kicking
Statistic	gp	fgm	fga	pct	lg	xpm	xpa	pct	pts
Event
Total	9	-	-	-	-	-	-	-	0
Conference	4	-	-	-	-	-	-	-	0
Exhibition	-	-	-	-	-	-	-	-	0
Location
Home	4	-	-	-	-	-	-	-	0
Away	5	-	-	-	-	-	-	-	0
Neutral	-	-	-	-	-	-	-	-	0
Result
Wins	5	-	-	-	-	-	-	-	0
Losses	4	-	-	-	-	-	-	-	0
Month
August	1	-	-	-	-	-	-	-	0
September	3	-	-	-	-	-	-	-	0
October	1	-	-	-	-	-	-	-	0
November	4	-	-	-	-	-	-	-	0

Split Stats - Punting
Statistic	gp	punt	yds	avg	lg	in20	fc	tb	blk
Event
Total	9	-	-	-	-	-	-	-	-
Conference	4	-	-	-	-	-	-	-	-
Exhibition	-	-	-	-	-	-	-	-	-
Location
Home	4	-	-	-	-	-	-	-	-
Away	5	-	-	-	-	-	-	-	-
Neutral	-	-	-	-	-	-	-	-	-
Result
Wins	5	-	-	-	-	-	-	-	-
Losses	4	-	-	-	-	-	-	-	-
Month
August	1	-	-	-	-	-	-	-	-
September	3	-	-	-	-	-	-	-	-
October	1	-	-	-	-	-	-	-	-
November	4	-	-	-	-	-	-	-	-

Split Stats - Returns
Statistic	kr	yds	avg	td	lg	pr	yds	avg	td	lg
Event
Total	-	-	-	-	-	-	-	-	-	-
Conference	-	-	-	-	-	-	-	-	-	-
Exhibition	-	-	-	-	-	-	-	-	-	-
Location
Home	-	-	-	-	-	-	-	-	-	-
Away	-	-	-	-	-	-	-	-	-	-
Neutral	-	-	-	-	-	-	-	-	-	-
Result
Wins	-	-	-	-	-	-	-	-	-	-
Losses	-	-	-	-	-	-	-	-	-	-
Month
August	-	-	-	-	-	-	-	-	-	-
September	-	-	-	-	-	-	-	-	-	-
October	-	-	-	-	-	-	-	-	-	-
November	-	-	-	-	-	-	-	-	-	-

Split Stats - All-Purpose
Statistic	gp	rush	rcv	pr	kr	yds	ypg
Event
Total	9	52	89	-	-	141	15.7
Conference	4	1	8	-	-	9	2.3
Exhibition	-	-	-	-	-	0	-
Location
Home	4	-1	-	-	-	-1	-.3
Away	5	53	89	-	-	142	28.4
Neutral	-	-	-	-	-	0	-
Result
Wins	5	-1	8	-	-	7	1.4
Losses	4	53	81	-	-	134	33.5
Month
August	1	12	25	-	-	37	37.0
September	3	21	15	-	-	36	12.0
October	1	18	49	-	-	67	67.0
November	4	1	-	-	-	1	.3

Split Stats - Scoring
Statistic	pts	pts/g	rush	rec	kr	pr	int	fum	xpm	fgm	2pt	misc
Event
Total	6	0.7	0	1	-	-	-	-	-	-	0	0
Conference	0	0.0	0	0	-	-	-	-	-	-	-	0
Exhibition	0	-	-	-	-	-	-	-	-	-	-	0
Location
Home	0	0.0	0	-	-	-	-	-	-	-	-	0
Away	6	1.2	0	1	-	-	-	-	-	-	0	0
Neutral	0	-	-	-	-	-	-	-	-	-	-	0
Result
Wins	0	0.0	0	0	-	-	-	-	-	-	-	0
Losses	6	1.5	0	1	-	-	-	-	-	-	0	0
Month
August	0	0.0	0	0	-	-	-	-	-	-	-	0
September	0	0.0	0	0	-	-	-	-	-	-	-	0
October	6	6.0	0	1	-	-	-	-	-	-	0	0
November	0	0.0	0	-	-	-	-	-	-	-	-	0

Split Stats - Defense
Statistic	gp	tkl	ast	tot	tkl/g	sck	yds	tfl	yds	ff	fr	yds	int	yds	brup	blk
Event
Total	9	0	0	0.0	.0	0.0	0	0.0	0	0	0	0	0	0	0	0
Conference	4	-	-	0.0	.0	-	-	0.0	-	-	-	-	-	-	-	-
Exhibition	-	-	-	0.0	-	-	-	0.0	-	-	-	-	-	-	-	-
Location
Home	4	-	-	0.0	.0	-	-	0.0	-	-	-	-	-	-	-	-
Away	5	0	0	0.0	.0	0.0	0	0.0	0	0	0	0	0	0	0	0
Neutral	-	-	-	0.0	-	-	-	0.0	-	-	-	-	-	-	-	-
Result
Wins	5	-	-	0.0	.0	-	-	0.0	-	-	-	-	-	-	-	-
Losses	4	0	0	0.0	.0	0.0	0	0.0	0	0	0	0	0	0	0	0
Month
August	1	-	-	0.0	.0	-	-	0.0	-	-	-	-	-	-	-	-
September	3	-	-	0.0	.0	-	-	0.0	-	-	-	-	-	-	-	-
October	1	0	0	0.0	.0	0.0	0	0.0	0	0	0	0	0	0	0	0
November	4	-	-	0.0	.0	-	-	0.0	-	-	-	-	-	-	-	-

News mentions

Elijah Howard tallied 215 all-purpose yards on Saturday at Yale, including 108 yards on the ground for his second 100+ rushing game of the season. (Photo: Steve McLaughlin)

Article
October 05, 2024

Football Drops 23-22 Decision At Yale

Elijah Howard had 113 yards rushing and 68 yards receiving

October 05, 2024

Kimal Clark had a career-high 18 tackles in the game at UMass on September 21st. (Photo: Steve McLaughlin)

Article
September 21, 2024

Upset Bid Falls Just Short At UMass

Kimal Clark and Malachai Wright have career-high tackle efforts in the contest

September 21, 2024

Article
September 04, 2024

Football Set For Saturday Home Opener Versus Fordham

Game time set for 6:00 pm

September 04, 2024

Jamir Robertson

Bio

Game Log - Passing

Game Log - Rushing

Game Log - Receiving

Game Log - Kicking

Game Log - Punting

Game Log - Returns

Game Log - All-Purpose

Game Log - Scoring

Game Log - Defense

News mentions