JEE Main Test 55

Result

JEE Main Test 55

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
4 / -1

If an electron is transferred from A to B forming ions A⁺ and B^-, then the reaction is possible when

A
(E_B + I_B) > (I_A - E_A)

B
(I_A - E_B) > (I_B - E_A)

C
(I_B + E_B) > (I_A + E_A)

D
(I_A - E_A) > (I_B - E_B)

Solution

If electron gets transferred from A to B, then energy change = I_A - E_B

Alternatively, if the electron is transferred the other way to give B⁺ and A^- ions, then the energy change would be I_B - E_A.

A⁺ and B^- are actually formed, so the process requires less energy. Hence, I_A- E_B < I_B - E_A

i.e. (I_B + E_B) > (I_A + E_A), where I = Ionisation energy and E = Electron gain enthalpy of the respective elements.