Chapter 5, Problem 90E

Interpretation Introduction

Interpretation:

The name of the element that Mendeleev predicted before its discovery and called ekaaluminum is to be predicted.

Concept introduction:

The elements in a modern periodic table are arranged in an 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 $7$ periods and $18$ groups in modern periodic table.