Question

Incorrect order of I.P. ?
(1) Cu < Zn
(2) B > Ga
(3) Pd > Ag
(4) Ar <S​

Answer 1

Answer:

2 one is correct B>Ga

Explanation:

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Answer 2

The incorrect order of ionization potential is (4).

We have to find out the incorrect order of ionization potential.

1. Cu < Zn
2. B > Ga
3. Pd > Ag
4. Ar < S

Concepts :

• Ionization enthalpy : It is the amount of energy required to remove an electron from an isolated gaseous atom. and ionization potential is the potential due to ionization enthalpy.
• In periodic table, when we move left to right in a period, ionization enthalpy will increase and when we move top to bottom in a group, ionization enthalpy will decrease.

In 3rd period, elements are ; Na , Mg , Al , Si , P , S , Cl , Ar.

From above explanation, we said that ionization enthalpy increase from left to right.

∴ Oder of ionization enthalpy is Na < Mg < Al < Si < P < S < Cl < Ar.

Hence, it is clear that ionization enthalpy of Ar > S. but here in option (4) Ar < S.

Therefore the incorrect order of ionization potential is (4).

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