The formula of a compound between a group 13 element, M, and a group 15 element, X, will be:
A
MX
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B
M3X3
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C
M2X3
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D
MX3
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Solution
The correct option is CMX The formula of a compound between any group 13 element, M, and
any group 15 element, X, will be MX. An example is aluminum nitride AlN.M will lose three electrons to complete its
octet.
It will form M3+ ion. X will gain three electrons to complete
its
octet. It will form X3− ion. One M3+ ion will combine with
one
X3− ion.