Which letter is not used as a symbol of chemical element?

H
I
J
K
H is the chemical symbol of hy­dro­gen, I - iodine, K - potas­si­um.

Answers distribution

H
I
J
K
answers
flagPakistan
0%
0%
100%
0%
11
flagCanada
0%
0%
92%
7%
14
flagthe Philippines
0%
7%
92%
0%
13
flagIndia
4%
5%
89%
0%
68
flagthe United States
5%
5%
81%
5%
154
flagthe United Kingdom
2%
10%
79%
6%
94
flagPoland
8%
12%
73%
4%
2031
flagAustralia
10%
0%
60%
10%
10
flagGermany
14%
14%
53%
17%
28

Gender

men73%
women69%
H
9%
11%
I
13%
12%
J
73%
69%
K
2%
6%

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Which letter is not used as a symbol of chemical element?
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