Question

The incorrect statement among the following is ______

Options

• Actinoids are highly reactive metals, especially when finely divided.

• Actinoid contraction is greater from element to element than Lanthanoid contraction.

• Most of the trivalent Lanthanoid ions are colourless in the solid state

• Lanthanoids are good conductors of heat and electricity.

Answer 1

The incorrect statement among the following is Most of the trivalent Lanthanoid ions are colourless in the solid state.