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Q.

The I1,I2,I3,I4  values of an element ‘M’ are 120 kJ/mole , 600kJ/mole, 1000kJ/mole and  8000 kJ /mole. Then the formula of its sulphate is 
 

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a

M3(SO4)2

b

M2SO4    

c

M2(SO4)3

d

MSO4

answer is B.

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Detailed Solution

Sudden jump in 4th IP….element has three valence electrons ;

Valency of the element = 3 ;

M3+ SO42-.... M2SO43

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