The 1 st , 2 nd and the 3 rd ionization enthalpies, I 1 ,   I 2 and I 3 , of four atoms with atomic…

The 1st, 2nd and the 3rd ionization enthalpies, I1, I2 and I3, of four atoms with atomic numbers n, n+1, n+2, and n+3, where n<10, are tabulated below. What is the value of n?

Atomic number Ionization Enthalpy (kJ/mol)
  I1 I2 I3
n 1681 3374 6050
n+1 2081 3952 6122
n+2 496 4562 6910
n+3 738 1451 7733

 

Solution

From given data (n+2) atom is alkali metal which is sodium.

As n+2=11

So, n=9

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Asked in: JEE Advanced 2020 (Paper 2)

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