An element X burns in oxygen to form an ionic compound X2O. Write the formula of the
compounds formed if this element is made to combine with bromine and sulphur.
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X with sulphur
X2S
1s2 2s2 2p6 3s2 3p4 is the electronic configuration of sulphur so the valency is 2-
X with bromine
XBr
because bromine has valency of 1
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