EVERYDAY SCIENCE

Detailed explanation-1: -A. It is TRUE that metals generally have lower ionization energy than nonmetals. This means that it is easier for metals to lose electrons and thus form cations.

Detailed explanation-2: -Because metals tend to lose electrons, it is relatively less difficult to remove electrons from them relative to nonmetals, and thus, they have lower ionization energies than nonmetals.

Detailed explanation-3: -Non-metals have high ionization energy, high electron affinity, and high electronegativity. They have small atomic radii and large ionic radii. They are poor conductors of heat and electricity. They do not easily give up electrons.

Detailed explanation-4: -Metal atoms lose electrons to nonmetal atoms because metals typically have relatively low ionization energies. Metals at the bottom of a group lose electrons more easily than those at the top. That is, ionization energies tend to decrease in going from the top to the bottom of a group.

Detailed explanation-5: -So, due to their large size and their valence shell electronic configuration, alkali metal easily loses its electron to attain noble gas configuration. Therefore, the ionization enthalpy of alkali metal is low.