Question

If the mass of proton is doubled and that of neutron is havled th emolecular weight of `CO_(2) ` consisting only isoeletronic series?
A. `N^(3-),O^(2-),Cl^(-),Ne`
B. `F^(-),Ar,S^(2-),Cl^(-)`
C. `P^(3-),S^(2-),Cl^(-),Ar`
D. `N^(3-),F^(-),O^(2-),Ar`

Answer 1

Correct Answer - b
`CO_(2)`
No, of protons =6+16=22
No, of neutrous =6+16=22
New total mass `=22xx2+(22)/(2)=55`
Increases in mass =11
% increase `=(11)/(44)xx100=25%`