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%
4%
95%
0%
21
flagthe Philippines
0%
6%
93%
0%
15
flagSingapore
0%
0%
91%
8%
12
flagUkraine
9%
0%
90%
0%
11
flagItaly
0%
10%
90%
0%
10
flagIndia
4%
4%
89%
0%
119
flagCanada
0%
0%
88%
5%
17
flagUnknown
5%
12%
80%
2%
80
flagthe United States
6%
6%
78%
6%
227
flagthe United Kingdom
3%
9%
78%
7%
142
flagNorway
16%
8%
75%
0%
12
flagPoland
8%
13%
73%
4%
3219
flagAustralia
7%
0%
71%
7%
14
flagthe Netherlands
0%
20%
66%
13%
15
flagGermany
13%
15%
46%
24%
45

Gender

men74%
women72%
H
8%
9%
I
12%
12%
J
74%
72%
K
4%
5%

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answers
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Which letter is not used as a symbol of chemical element?
603
86%

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