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Electron affinity is expressed in...

Electron affinity is expressed in

A

kJ

B

J

C

kJ mol

D

kJ `mol^(-1)`

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Eelctroncgativity of fluorine is greater than chlorine, but electron affinity is higher in chlorine that fluorine— explain.Why 2nd ionisation potential is always greater than 1st ionisation potential?

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Knowledge Check

  • Electron affinity of inert gases is

    A
    high
    B
    low but positive
    C
    moderate
    D
    almost zero

  • Second electron affinity of an element is

    A
    Always exothermic
    B
    Endothermic for few elements
    C
    Exothermic for few elements
    D
    Always endothermic

  • The second electron affinity of oxygen is +744 kJ *mol^(-1) then the second electron affinity of sulphur is-

    A
    `-200kJ*mol^(-1)`
    B
    `+450kJ*mol^(-1)`
    C
    `+800kJ*mol^(-1)`
    D
    `1200kJ*mol^(-1)`

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    Correct order of electron affinity is/are

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    (i) Electron affinity of Cl is greater than that of E explain. (ii) Indicate the basic/acidic behaviour of the hydrides of following elements: F,C,O,N.

    First electron affinity of oxygen is negative but second electron affinity is positive-explain.

    Is the value of electron affinity of an element be zero?

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