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JEE Main2019Chemistry
Q.

The group number, number of valence electrons, and valency of an element with atomic number 15, respectively, are :

  1. A

    15, 5 and 3

  2. B

    15, 6 and 2

  3. C

    16, 5 and 2

  4. D

    16, 6 and 3

Solution

Phosphorus has atomic number equal to 15. Its group number is 15, it has 5 valence electrons and valency equal to 3.

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