1

Question

H
Hydrogen
1.008

Atomic number
atomic mass
# of protons
# of neutrons
# of electrons

Answer 1

Here's the information for Hydrogen filled in according to the details you provided:

• Atomic number: 1
• Atomic mass: 1.008
• # of protons: 1
• # of neutrons: 0 (Hydrogen typically has no neutrons in its most common isotope, protium)
• # of electrons: 1

So, summarizing:

• Element: Hydrogen (H)
• Atomic Number: 1
• Atomic Mass: 1.008
• # of Protons: 1
• # of Neutrons: 0
• # of Electrons: 1