Shikha Goel and Saleha Parvez Solutions for Chapter: Atomic Structure and Chemical Bonding, Exercise 6: CHAPTER EXERCISE

The electronic configuration of elements is given. Name the elements.

$2, 8, 8, 2$

The electronic configuration of elements is given. Name the elements.

$2, 8, 1$

An atom $\mathrm{X}$has $4$ protons and $5$ neutrons with electronic configuration $2, 2$.

Give information about its atomic number.

An atom $\mathrm{X}$ has $4$ protons and $5$  neutrons with electronic configuration $2, 2$.

Give information about its mass number.

An atom $\mathrm{X}$ has $4$ protons and $5$  neutrons with electronic configuration $2, 2$.

Give information about its valency.

Explain the formation of calcium oxide and magnesium chloride with the help of orbit diagram.

(Atomic number : $\mathrm{Ca} = 20, \mathrm{O} =8, \mathrm{Mg} =12, \mathrm{CI} =17$).

Write four characteristics properties of cathode rays.

Write the rules suggested by Bohr and Bury for the distribution of electrons in an atom giving suitable examples.