Which letter is not used as a symbol of a chemical element?
N
O
P
R
N is the chemical symbol of nitrogen, O - oxygen, P - phosphorus.
reach: rather globalchemical elementschemistry
Answers by country
N
O
P
R
answers
the Netherlands
14
Poland
8293
Ghana
23
Malaysia
32
India
568
Unknown
42
the United Kingdom
182
France
14
the Philippines
57
Canada
36
Germany
206
Nigeria
75
the United States
453
Switzerland
20
Pakistan
60
Austria
30
Singapore
33
Republic of Ireland
20
the United Arab Emirates
17
Australia
68