the atomic number of A and B are 12 and 8 resp. they combine together. write the formula and nature of bonding in the compound.
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A = 12 = magnesium
B = 8 = oxygen
i) write the formula = Mg(+2)+ O(-2)= MgO
ii) nature of bonding
they form ionic bond because magnesium loses two electron to complete oxygen's octet.
hope this helps :)
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