(iv) write the formula of the compound formed when X
reacts with 27 Y.
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(a) An element with electronic configuration 2, 6 will need to gain two more electrons to acquire stability and completely fill its octet.
Hence, by gaining two electrons it will acquire a -2 charge. Therefore, by cross multiplication method formula of the compound is .
(b) An element with electronic configuration 2, 8, 7 will need to gain just one electron in order to gain stability and hence, completely fill its octet.
Therefore, according to cross multiplication method formula of the compound will be XZ.
Explanation:
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