Question

1. how would you draw a lewis dot diagram for the following atom of arsenic? 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³

Explanation:

First, determine the valence - electrons of arsenic from its electron - configuration. The electron - configuration given suggests arsenic is in group 15. Valence electrons are used for Lewis dot diagrams. For group 15 elements, there are 5 valence electrons. Then, represent the atom with its symbol and place the valence electrons as dots around the symbol one at a time in four directions (up, down, left, right) and then pair them up if there are more than 4.

Answer:

Draw the symbol 'As'. Place one dot each at the top, bottom, left, and right of the 'As' symbol, and then place the fifth dot on one of the four sides to pair with an existing dot.