Answer :
Answer:
Helium
Explanation:
- Helium has atomic number=Z=2
- Atomic Mass=4u
- Group-18(inert/noble gases)
- Period-1
Answer:
Helium
Explanation:
Give the other person brainilest!!
Hope this helps.
Answer:
Helium
Explanation:
Answer:
Helium
Explanation:
Give the other person brainilest!!
Hope this helps.