The alkali metal (group IA ) from the given options is to be identified. Concept Introduction: The elements in a modern periodic table are arranged in increasing order of their atomic numbers. In the modern periodic table, the horizontal rows are known as periods and vertical columns are known as groups. There are seven periods and eighteen groups in the modern periodic table.

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Chapter 3, Problem 3.64E

Interpretation Introduction

Interpretation:

The alkali metal (group IA) from the given options is to be identified.

Concept Introduction:

The elements in a modern periodic table are arranged in increasing order of their atomic numbers. In the modern periodic table, the horizontal rows are known as periods and vertical columns are known as groups. There are seven periods and eighteen groups in the modern periodic table.

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