Question

$\Large\bf{Question:-}$
Refer to the attachment above and answer it correctly!!



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Answer 1

Answer:

The only chemical elements that form stable homonuclear diatomic molecules at standard temperature and pressure (STP) (or typical laboratory conditions of 1 bar and 25 °C) are the gases hydrogen (H2), nitrogen (N2), oxygen (O2), fluorine (F2), and chlorine (Cl2).

Answer 2

Answer:

I guess 11 .

Explanation:

Oxygen

Helium

Radon

Xenon

Hydrogen

Argon

Neon

Krypton

Nitrogen

Fluorine

Chlorine