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Anything that influences the valence ele...

Anything that influences the valence electrons will affect the chemistry of the element. Which one of the following factors does not affect the valence shell?
(A) Valence principal quantum number (n).
(B) Number charge (Z).
(C) Nuclear mass
(D) Number of core electrons.

Text Solution

Verified by Experts

(C) nuclear mass does not affect the valence shell electrons (such as, `""_(1)^(2)H and ""_(1)^(1)H` have similar chemical properties.
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Knowledge Check

  • Which of the following contains only one unpaired electron in the valence shell?

    A
    `"_18Na`
    B
    `"_21Sc`
    C
    `"_9F`
    D
    `"_7N`

  • For the valence electron in copper the four quantum numbers are

    A
    n=4 , l=0 , m=0 s=+1/2
    B
    n=4 , l=0 , m=0 s=+1/2
    C
    n=4 , l=0 , m=+2 s=+1/2
    D
    n=4 , l=0 , m=+2 s=+1/2

  • Which pair has different number of valence electrons ?

    A
    `Na^(+1),Al^(+3)`
    B
    `P^(-3),Ar`
    C
    `O^(-2),F^(-1)`
    D
    `Mg^(+2),Ar`

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    The number of d-electrons in Fe^2+ (Z=26) is not equal to the number of electrons in which one of the following ?

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