Question

The correct decreasing order of size amongst Sr,Ca,Mg
A)Sr,Mg,Ca
B)Ca,Sr,Mg
C)Mg,Ca,Sr
D)Sr,Ca,Mg

Answer 1

Option D is Correct because down the group size increases and in Option Dwe are going up the group so size decreases

Answer 2

I think D)Sr,Ca,Mg
Bcoz the Atomic mass and atomic number of Sr(strontium) is greater than the Ca(Calcium) and Mg(Magnesium)
And the atomic mass and atomic number of Ca is greater than the Mg