Question

Which of the following is the atomic number of an element that forms basic oxide?
a:)18
b:)17
c:)19
d:)15​

Answer 1

Answer:

15 is the answer according to me

Answer 2

Answer:

Element. Atomic no.

a) Argon.(Ar)- 18

b) Chlorine(Cl)- 17

c) Potassium (K)- 19

d) Phosphorus (P)-. 15