Question

Can someone please tell me this answer Fast. It is urgent​

Answer 1

Answer:

a) 2 HYDROGEN ATOMS

b) Hydrogen has 2 valence electrons

Answer 2

Hey mate this can help you.

Explanation:

2H ---> It is denoting 2 moles of hydrogen atoms.

$h_{2} ---->$It is denoting 2 molecules of hydrogen bonded to form a single bond.