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Write the formula of the three compounds so formed. To which group and period of the Modern Periodic Table does the elements ’M’ belong .7 Will ’M’ form covalent or ionic compounds? Give reason to justify your answer. |
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Answer» Electronic configuration of M= 2,8,2Number of valence electron of M=2valency of M = Number of valence electrons = 2Valency of the nitrate ion (NO3)- = 1Valency of the SULPHATE ion (SO4-2) =2Valency of PHOSPHATE ion (PO4-3) =3The formulae of nitrate ,sulphate and phosphate formed by M are M(NO3)2, MSO4, and M3(PO4)2 respectively.Since the valency of M is 2 and the atomic number of M is 12 such as (2,8,2), this element belongs to the group 3 and PERIOD 3 of the periodic table. This element will TEND to form an ionic compound by losing two valence electrons to achieve a noble gas electronic configuration, that is a STABLE octet in the valence shell. |
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