Subject Experts Solutions for Chapter: Atomic Structure, Exercise 1: PRACTICE QUESTIONS (CLASSROOM WING)

Give the geometrical representations of electronic arrangements of the following element:

• Phosphorus

Find the number of valence electrons in the following elements by writing the electronic configuration in their atoms.

Nitrogen

Find the number of valence electrons in the following elements by writing the electronic configuration in their atoms.

Sulphur

Find the number of valence electrons in the following elements by writing the electronic configuration in their atoms.

Chlorine

Explain how the results of $\mathrm{\alpha }$-ray scattering experiment led to Rutherford's model of atom. Give the postulates and drawbacks of Rutherford's atomic model.

If protons, deuterium ions and tritium ions are separately used in $\mathrm{\alpha }-$ray scattering experiment instead of $\mathrm{\alpha }-$particles, what type of changes would you expect in these observations?

Find out the maximum number of electrons that can be accommodated in K-shell, L-shell, M-shell and N-shell by using Bohr-Bury scheme.

Give the properties of cathode rays in comparison to the properties of canal rays.