Select the incorrect statement(s) about lanthanoids.

Question

Select the incorrect statement(s) about lanthanoids. (A) All lanthanoids are silvery white soft metals. (B) Many trivalent lanthanoid ions are coloured. (C) These are bad conductors of heat and electricity. (D) Hardness increases with increase in atomic number.

Tardigrade Admin · Accepted Answer

Lanthanoids are good conductors of heat and electricity.

Q. Select the incorrect statement(s) about lanthanoids.

All lanthanoids are silvery white soft metals.

Many trivalent lanthanoid ions are coloured.

These are bad conductors of heat and electricity.

Hardness increases with increase in atomic number.

Lanthanoids are good conductors of heat and electricity.