Problem: What is the correct chemical formula for the ionic compound that forms from the elements calcium (Ca) and nitrogen (N)?a) Ca3N2 b) Ca2N2c) Ca2N3d) CaNe) cannot tell from the information given 

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We are being asked what will be the chemical formula of an ionic compound that is formed from the elements calcium (Ca) and nitrogen (N). Elements have common charges based on what group they belong to in the periodic table.

Elements gain and lose electrons so that they have the same number of electrons as the noble gases.

Metals → lose electrons and gain positive (+) charge to become more like their closest noble gas

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Problem Details

What is the correct chemical formula for the ionic compound that forms from the elements calcium (Ca) and nitrogen (N)?

a) Ca3N

b) Ca2N2

c) Ca2N3

d) CaN

e) cannot tell from the information given 

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