4. An element X has a valency of 2. Write the simplest formula for:
(a) bromide of the element …………………………
(b) nitrate of the element …………………………
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Solution
Dear student,
X element has the valency of 2, bromine has the valency of 1, nitrate has the charge of 1, therefore criss crossing the valencies we get i) XBr2 ii) X(NO3)2