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Chapter 1: Problem 6

The valence shell in a silicon atom has the number dexignation of (a) 0 (b) 1 (c) 2 (d) 3

Short Answer

Expert verified
The valence shell number designation in a silicon atom is (d) 3, as the electron configuration of silicon is 1s虏 2s虏 2p鈦� 3s虏 3p虏, and the outermost energy level, which contains the valence electrons, is 3.

Step by step solution

01

Determine electron configuration of silicon

To determine the electron configuration of silicon, we first need to find the atomic number of silicon, which is 14. This means that a silicon atom has 14 electrons. The electron configuration consists of the energy levels, sublevels and the number of electrons in them. For silicon, the electron configuration is: 1s虏 2s虏 2p鈦� 3s虏 3p虏
02

Identify the valence electrons in silicon

Valence electrons are the electrons located in the outermost energy level of an atom. In the electron configuration of silicon (1s虏 2s虏 2p鈦� 3s虏 3p虏), the outermost energy level is 3 with the sublevels 3s虏 and 3p虏.
03

Find the valence shell number designation

Since the valence electrons are found in the energy level 3, the valence shell has the number designation (n) of 3. #:Solution:# Based on step-by-step analysis, the correct option for valence shell number designation in a silicon atom is: (d) 3

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