Variation of Atomic Size

Q.

What happens to the atomic size of elements moving from top to bottom of a group?

Q.

The incorrect order of atomic radius for the following elements is ______________.

1. Kr>Ar>Ne>He

2. B<Al<Ga<In

3. All of the orders are correct.

4. K>Na>Li>H

Q.

The correct order of ionic size of the species $K^{+},C{l}^{-},C{a}^{2+}$ and $S^{2-}$ is:

1. > > > .

2. > > > .

3. > > > .

4. > > > .

Q. In an atom, the nucleus is at the centre constituting protons and neutrons. Electrons are around the nucleus occupying specified shells. What does atomic size (or radius) refer to?

1. Distance from the first orbit to the outermost orbit.
2. Distance from the centre of the nucleus to the valence orbit.
3. Total number of shells.
4. Distance from the border of the nucleus to the outermost orbit.

Q.

Which of the following has covalent radius more than germanium?

1. Tin

2. Lead

3. Phosphorus

4. Iodine