Chapter 2.4, Problem 2.8Q

(a)

Interpretation Introduction

Interpretation:

The symbol of the noble gas that is present in third period of periodic table has to be identified.

(b)

Interpretation Introduction

Interpretation:

The element which is having the smallest mass in $\text{Group IVA or 14}$ of periodic table has to be identified.

(c)

Interpretation Introduction

Interpretation:

The only metalloid in $\text{Group IIIA or 13}$ of periodic table has to be identified.

(d)

Interpretation Introduction

Interpretation:

The element which atoms having $\text{18}$ protons of periodic table has to be identified.