Question

Question-1:: The composition of two atomic particle are given below::-
Element-X Element-Y
e= 8 8
p= 8 8
n= 8 9
A= 16 17
Q. 1=What is the relation between X andY?

Answer 1

Answer:

isotopes

Explanation:

both elements X & Y have same number of electrons and protons so, it is not a ion .

now, we can say that the atomic number

of both the elements are same .

but still the masses are different .

hence , of the atomic number is same and mass number is different then we term it has isotopes

Answer 2

Answer:

the answer is in the pics