Question

The successive ionisation energies of a certain element are i1=589.5

Answer 1

Explanation:

The successive ionization energies of a certain element are I1 = 589.5 kJ/mol, I2 =1145 kJ/mol, I3= 4900 kJ/mol, I4 = 6500 kJ/mol, and I5 = 8100 kJ/mol. This pattern of ionization energies suggests that the unknown element is

K

Si

As

Ca

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