Second ionization energy of any atom is the energy required to remove an electro

Question

Second ionization energy of any atom is the energy required to remove an electron from unit positive ion in gaseous state.

(a)

from above figure we can say that :

2nd ionization energy can be written as

Na+(g) ------>Na2+(g) + e-

+4560 kJ/mol energy required is positive

b.

electron affinity is energy change (released or absorbed) when there is addition of an electron in a neutral atom

Na(g) + e- ---->Na-(g)

- 53 kJ/mol energy is released

c.

For chlorine

Cl(g) + e- ---->Cl-(g)

-349 kJ/mol

Explanation / Answer

d. Given that: Na(g) Na+(g) +e Cl(g) + e Cl-(g) Cl2(g) 2Cl(g) Na(g) + e Na(g) Cl(g) Cl®(g) + Na+(g) Na+2(g)+e Heat energy required 496 kJ per one mole Na Heat energy released 349 kJ per one mole Cl (g) Heat energy required 244 kJ per one mole Cl2(g) Heat energy released 53 kJ per one mole Na Heat energy required i251 kJperone mole Cl (g) Heat energy required 4560 kJ per one mole Na+ e a. What is the second ionization energy of sodium in kJ/mol? b. What is the electron affinity of sodium in kJ/mol? c. What is the electron affinity of chlorine in kJ/mol?

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