1.

Two element M and N belong to group I and II respectively and are in the same period of the periodic table. How do the following properties of M and N vary?1) Size of their atoms2) This metallic characters3) Their valencies informing oxides.4) Molecular, formulae of their chlorides.

Answer»

1. M and N belong to the same period but group I and II. Therefore N will be smaller than M as a atomic size is decreases from left to right.
2. M is more metallic than N. Metallic character goes on decreasing from left to right as tendency to lose electrons.
3. Their valencies are 1 and 2 respectively in forming oxides. Valency goes on increasing first and then decreases.
4. MCl, NCl2 are molecules formulae of their chlorides.



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