Two elements X and Y belong to group 1 and 2 respectively in the same period of the periodic table. Compare these elements with respect to :

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Two elements X and Y belong to group 1 and 2 respectively in the same period of the periodic table. Compare these elements with respect to : 

(i) number of electrons in their outermost orbit 

(ii) their valencies 

(iii) metallic character 

(iv) their atomic size 

(v) formula of their chlorides 

(vii) formula of their sulphates.


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Salim Ahmed Kawsar

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(i) Number of electrons in the outermost orbit of 

X=1 and Y=2.

(ii) Valency of X=1 and Y=2.

(iii) Metal X is more metallic than Y.

(iv) Atomic size of X is bigger than that of Y.

(v) Chloride XCl; YCl2

(vi) Sulphate X2SO4;YSO4 

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