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The element with atomic number 7 is foun...

The element with atomic number 7 is found in

A

`1^st` period IA group

B

`2^nd` group VA group

C

`2^nd` period IIIA group

D

`2^nd` period IVA group

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Electronic configuration of the element with atomic number 56 and mass number 138 is

Knowledge Check

  • The element with atomic number 12 belongs to ….. group and…... period.

    A
    `1^(st)`,third
    B
    `3^(rd)`,third
    C
    `2^(nd)`, third
    D
    `2^(nd)`, second

  • Electronic configuration of the element with atomic number 56 and mass number 138 is

    A
    `[Xe]6s^(2)`
    B
    `[Kr]5s^(2)`
    C
    `[Xe]6s^(2) 6p^(2)`
    D
    `[Xe] 3d^(2) 5d^(2)`

  • Electronic configuration of the element with atomic number 56 and mass number 138 is

    A
    `[Xe]6s^(2)`
    B
    `[Kr]5s^(2)`
    C
    `[Xe]6s^(2) 6p^(2)`
    D
    `[Xe]3d^(2) 5d^(2)`

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    The valence electron configuration of an element with atomic number 23 is

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    The number of electrons in M-shell of an element with atomic number 24 is

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