Q.1. An element X (2,8,2) combines separately with NO3 and (SO4)2 -, (PO4)3 - radicals.
Write the formulae of the three compounds so formed. To which group of the periodic
table does the element ‘X’ belong? Will it form covalent or ionic compound? Why?
Q.2. Two elements X and Y have atomic numbers 12 and 16 respectively. Write the
electronic configuration for these elements. To which period of the modern periodic
table do these two elements belong? What type of bond will be formed between
them and why?
Answers
Answered by
83
Answer:
1. (i) X(NO3)2
(ii)XSO4
(iii)X3(PO4)2
(iv)Group II
(v)It will form an ionic bond since it is a metal.
2. (i)X= 2,8,2
Y=2.8,6
(ii)X= Group II
Y= Group XVI
(iii)They will form an ionic bond since X is a metal and Y is a non metal.
1. (i) X(NO3)2
(ii)XSO4
(iii)X3(PO4)2
(iv)Group II
(v)It will form an ionic bond since it is a metal.
2. (i)X= 2,8,2
Y=2.8,6
(ii)X= Group II
Y= Group XVI
(iii)They will form an ionic bond since X is a metal and Y is a non metal.
Answered by
3
Answer:
X(2,8,2) - This element is Magnesium. It belongs to group 2 of the periodic table.
Mg
2+
+NO
3
−
→Mg(NO
3
)
2
[Magnesium Nitrate]
Mg
2+
+(SO
4
)
2−
→Mg(SO
4
)[Magnesium Sulphate]
Mg
2+
+(PO
4
)
3−
→Mg
3
(PO
4
)
2
[Magnesium Sulphate]
Element X which is Magnesium will form ionic compounds by losing 2 electrons from its valence shell.
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