Question

Study the given diagram of the periodic table and fill up the blanks with appropriate choice.

($\to$ indicates the increasing trend of property.)

	P	Q	R	S
(a)	Ionisation enthalpy	Electron gain enthalpy	Atomic radius	Electro-negativity
(b)	Atomic radius	Ionisation enthalpy	Electro-negativity	Electron gain enthalpy
(c)	Ionisation enthalpy	Atomic radius	Electro-negativity	Electron gain enthalpy
(d)	Electro-negativity	Electron gain enthalpy	Ionisation enthalpy	Atomic radius

• A. a
• B. b
• C. c
• D. d

Answer 1

Answer: (A)

Ionisation enthalpy, electron gain enthalpy and electronegativity increases in a period from left to right while atomic radius decreases.