P BLOCK ELEMENTS

The general electronic configuration of p-block elements is

• ns¹

• ns²

• ns² np^1–6

• (n–1)s² np1–6

p-block element consists of the groups

• 1 & 2

• 3 - 12

• 13 - 17

• 13 - 18

As we go down the group metallic character

• decreases

• increases

• become constant

• become zero

In p-block, non-metals are placed in

• upper right part

• middle part

• lower left part

• bottom of the group

Which of the following factor is not responsible for the anamolous behaviour of the first member of each group in a p-block elements

• small size

• high ionisation enthalpy

• outer electronic configuration

• absence of d-orbitals

In 13th group Tl⁺¹ ion is more stable than Tl³⁺ ion due to

• high electronegatively

• inert pair effect

• high ionisation energy

• stable electronic configuration

pick the odd man out

• In

• Pb

• Cl

• Al

Choose the wrong statement

• Some of the p-block elements show negative oxidation states also

• Halogens gain two electrons to give a stable halide ion

• Inert gases have ns2np6 configuration and hence more stable.

• P block elements contains metalloids

Some elements exist in more than one crystalline or molecular forms in the same physical state. This phenomenon is called

• Isophorphism

• Allotropism

• both

• none

The elements N, O, F readily forms hydrogen bonds due to their high

• ionisation energy

• electron affinity

• electro negativity

• atomic radius