How many elements are there in Period 1, 2, 3 and 4 ?
Answers
Answered by
2
Answer:
Period 1 :- Hydrogen , Helium.(no.2)
Period 2:- Lithium , Beryllium, Boron, Carbon, Oxygen,
Fluorine, Neon.(no.8)
Period 3:- Sodium, Magnesium, Aluminium, Silicon,
Phosphorus, Sulphur, Chlorine, Argon.(no.8)
Period4:- Potassium, Calcium, Scandium, Titanium,
Vanadium, Chromium, Manganese, Iron,
Cobalt, Nickel, Copper, Zinc,Gallium,
Grmanium, Arsenic, Bromine, Krypton.(no.18)
Answered by
0
Period no → number of elements
1 → 2
2 → 8
3 → 8
4 → 18
5 → 18
6 → 32
7 → 32
Similar questions