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enyata [817]
3 years ago
6

How can you determine the number of valence electrons an atom has

Chemistry
1 answer:
Luden [163]3 years ago
6 0

For neutral atoms, the number of valence electrons is equal to the atom's main group number. The main group number for an element can be found from its column on the periodic table. For example, carbon is in group 4 and has 4 valence electrons. Oxygen is in group 6 and has 6 valence electrons.


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See explaination

Explanation:

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3 years ago
How do I calculate the molecular weight of Mg(OH)2?
vodomira [7]

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<h3>Further explanation</h3>

Given

Mg(OH)2 compound

Required

The molecular weight

Solution

Relative atomic mass (Ar) of element : the average atomic mass of its isotopes  

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M AxBy = (x.Ar A + y. Ar B)  

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5 0
2 years ago
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