Chapter 6, Problem 54A

Interpretation Introduction

Interpretation:

Barium needs to be classified according to group, period, and block in the periodic table.

Concept introduction:

A periodic table consists of groups and periods. The horizontal rows are termed as periods and the vertical columns are termed as groups. The elements with similar properties are placed together in a group. The elements are also located according to different blocks like s, p, d, f blocks.

Answer to Problem 54A

Barium is located in group 2 in the s-block and on the 6th period.

Explanation of Solution

Barium is located in group 2 in the s-block and on the 6th period. So, the electronic configuration of Barium is given as 1s²2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶6s² and the noble as configuration for Barium is [Xe]6s²

Conclusion

The element Barium is located on the s-block in group 2 and on the 6th period.