# Chapter 8 - Sections 8.1-8.9 - Exercises - Problems by Topic - Page 376: 54

(b.) : noble gas (d.) : metalloid

#### Work Step by Step

(b.) has configuration of $ns^{2}np^{6}$. It is a noble gas. (d.) has configuration of $ns^{2}np^{2}$. It will neither lose nor gain electrons easily. It will have the properties of a metalloid.

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