1.

The ratio of difference in the numberof electrons between K and M shells is3 :2for X and Y elements respectively . 'X' possesses stable electronic configuration and M is the valence shell for both X and Y. Give the electronic configurationsof X and y.

Answer»

2 , 8 , 5 and2 , 8 , 4
2 , 8 , 8 and 2 ,8 , 6
2 , 8 , 8 and2 , 6 , 6
2 , 8 , 6 and 2 , 8 , 4

Solution :`{:(X,:,Y),(3,:,2),(2_(,)8_(,)8,,2_(,)8_(,)x),((8-2)/(x+2)=(3)/(2),,,X=6):}`
`:.Xto2,8,8andYto2,8,6`


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