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1.Both are differ in valency shell electrons

2.I-A are monovalent and II-A are divalent

3.I-A is more reactive then the II-A group .

4.I-A have more electro positive character and II-A have less electro positive character than the

I-A group .

5.I-A have less ionization energy and II-A have high ionization energy than the I-A .

6.I-A have very less electro negativity than the II-A group elements.

7.I-A is soluble in water and II-A is insoluble in water .

8.I-A metals are does not react directly with nitrogen but II-A react with nitrogen directly.

9.I-A group elements are strong reducing agents than the II-A group elements.

10.The oxidation values are differ.

11.I-A obtained in solid state but II-A group in solution state

12.Decomposes on heating I-A give only oxygen but II-A group liberates both oxygen and nitrogen .

RGUKT IIIT NUZVID: N091528

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