Chapter 11, Problem 101E

Interpretation Introduction

(a)

Interpretation:

Whether the elements become more metallic or less metallic on moving down a group in the periodic table is to be stated.

Concept introduction:

Those elements that have tendency to form positive ion by losing electrons are called metals. So, metals are electropositive elements. The elements that have tendency to form anions by gaining electrons are called nonmetal. So, nonmetals are electronegative elements.

Interpretation Introduction

(b)

Interpretation:

Whether the elements become more metallic or less metallic on moving left to right across a period in the periodic table is to be stated.

Concept introduction:

Those elements that have tendency to form positive ion by losing electrons are called metals. So, metals are electropositive elements. The elements that have tendency to form anions by gaining electrons are called nonmetal. So, nonmetals are electronegative elements.