Chapter 5, Problem 91QRT

(a)

Interpretation Introduction

Interpretation:

Among the given elements $\text{Li,}\text{K,}\text{C,}\text{and}\text{N}$, an element with largest atomic radiushas to be identified.

Concept Introduction:

Atomic radius: It is the distance between center of nucleus and outermost electron shell.    When two atoms are bonded together in a molecule, the sum of their radii should equal the distance between their centers.

(b)

Interpretation Introduction

Interpretation:

The increasing order of first ionization energy of given elements $\text{Li,}\text{K,}\text{C,}\text{and}\text{N}$ has to be arranged.

Concept Introduction:

Ionization energy: It is the energy needed to remove an electron from that atom in gas phase.  For a gaseous sodium atom, the ionization process is given as,

    ${\text{Na}}_{\text{(g)}}\underset{}{\overset{}{\to }}{\text{Na}}^{\text{+}}{}_{\text{(g)}}\text{+}{\text{e}}^{\text{-}}$