Tuesday, September 22, 2015

Homework 9/18/15

1. F: 1s2 2s2 2p5
    Cl:1s2 2s2 2p63s2 3p5
    Br:1s2 2s2 2p63s2 3p6 4s2 3d10 4p5

All of the halogens end with 5 electrons in an outer p shell.

2. Li: 1s2 2s1
    Na: 1s2 2s2 2p6 3s1
    K: 1s2 2s2 2p6 3s2 3p6 4s1

 All of the alkali metals end with a single electron in their outer s shell.

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