Chapter 5, Problem 92A

Interpretation Introduction

Interpretation:

The elementcorresponding to the ground state electron-dot notation represented in diagram needs to be determined.

Concept introduction:

The ground state electron configuration is the arrangement of electrons around the nucleus at possible lowest energy level. In dot notation valence electrons of the atomis represented by dots around the chemical symbol of the element.

Answer to Problem 92A

Antimony

Explanation of Solution

Given: Manganese, Antimony, Calcium and Samarium

Explanations: Orbital dot notion represent the number of electrons present in the valence shell of the atom.

The given orbital diagram given is correct electron dot notation forAntimony because electron configuration of antimony is $\left[Kr\right]4d^{10}5s^{2}5p^3$ and it is showing that the element (Antimony) has $5$ valence electron

Conclusion

Manganese has $7$ valence electrons , Calcium has $2$ valence electrons and Samarium has $2$ valence electronsso this diagram do not represent their dot notation.