Question

The description of atomic particles of two elements X and Y is given bellow .

X. Y

Protons. :. 8 8
Neutrons. :. 8. 9
Electrons. : 8 8

1) What is the atomic number of Y ?

2) What is the mass number of X ?

3) What is relation between X and
Y ?
4) What is the electronic
configuration of X ?

5) Write the cation / anion formed by the element ?​

Answer 1

Answer:

1) 8.8

2) N=A-Z

8.9+8.8=17.7

4) 1s2, 2s2, 2p6, 3s2,3p5