# Lewis formulas, valance electron drawings

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One of the steps in writing the Lewis formulas of covalently bonded molecules is to add up the total number of valance electrons from the atoms involved. What are the total number of of such electrons for the following?

A)CH4 B) SO3 C)H2S D) NH3 E N2

https://brainmass.com/chemistry/bonding/lewis-formulas-valance-electron-drawings-26551

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The expert analyzes Lewis formulas and valence electron drawings.

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