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The minimum amount of energy which is re...

The minimum amount of energy which is required to remove an outermost electron from any isolated neutral gaseous atom is known as first ionisation energy. These are the following factors which effect ionisation energy.
(i) Ionisation energy `prop (1)/("Principal quantum number")`
(ii) Ionisation energy `prop Z_(eff)`
(iii) If orbitals are fully filled or half filled so stability will be more and ionisation energy will be high.
(iv) If penultimate electron will effectively shield the nucles, ionisation energy will be less and vice versa.
Choose the correct order of Ist ionisation energy

A

`Ne lt F`

B

`O gt N`

C

`Na gt AI`

D

`Mg gt AI`

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The correct Answer is:
D
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The minimum amount of energy which is required to remove an outermost electron from anyisolated neutral gaseous atom is known as first iosiation energy. These are the following factors which other ionisation energy. (i) Ionisation energy alpha (1)/("principal quantum number") (ii) Ionisation Energy alphaZ_(eff) (iii) If orbitals are fully filled or half filled so stability will be more and ionisation energy will be high (iv) If penultimate electron will effectively shield the mucleus ionisation energy wiill be less and vise versa. Choose the correct order of I^(st) ionisation energy

The minimum amount of energy which is required to remove an outermost electron from anyisolated neutral gaseous atom is known as first iosiation energy. These are the following factors which other ionisation energy. (i) Ionisation energy alpha (1)/("principal quantum number") (ii) Ionisation Energy alphaZ_(eff) (iii) If orbitals are fully filled or half filled so stability will be more and ionisation energy will be high (iv) If penultimate electron will effectively shield the mucleus ionisation energy wiill be less and vise versa. 1E_(1) and IE_(2) of Mg are 178 kcal/mol and 348 kcal/mol. The enthalpy required for the reaction MgrarrMg^(2+)+2e is:

Knowledge Check

  • The minimum amount of energy which is required to remove an outermost electron from any isolated neutral gaseous atom is known as first ionisation energy. These are the following factors which effect ionisation energy. (i) Ionisation energy prop (1)/("Principal quantum number") (ii) Ionisation energy prop Z_(eff) (iii) If orbitals are fully filled or half filled so stability will be more and ionisation energy will be high. (iv) If penultimate electron will effectively shield the nucles, ionisation energy will be less and vice versa. Which of the following has maximum Ist ionisation energy?

    A
    `He`
    B
    `Mg`
    C
    N
    D
    `Na`

  • The correct order of ionisation energy is :

    A
    Cu gt Ag gt Au
    B
    Cu gt Au gt Ag
    C
    Au gt Cu gt Ag
    D
    Ag gt Au gt Cu

  • Correct order of first ionisation energy is :-

    A
    `C gt N gt O`
    B
    `Mg gt Al gt P`
    C
    `Li lt Be lt N`
    D
    `Tl gt B gt In`

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