Question

Few values are given in the table in the direction from left to right and top to bottom. Predict the property which could be depicted in the table.

• A. Atomic number
• B. Ionisation enthalpy
• C. Atomic radius
• D. Electron gain enthalpy

Answer 1

The correct option is C Atomic radius

In a period, on moving from left to right, atomic number increases. In a group, on moving from top to bottom, atomic number increases.

In a period, on moving from left to right, ionisation enthalpy increases. In a group, on moving from top to bottom, ionisation enthalpy decreases.

In a period, on moving from left to right, atomic radius decreases. In a group, on moving from top to bottom, atomic radius increases.

In a period, on moving from left to right, electron gain enthalpy increases. In a group, on moving from top to bottom, electron gain enthalpy decreases.