The group number, number of valence electrons,
Question:

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

  1.  16,5 and 2

  2. 15,5 and 3

  3. 16,6 and 3

  4. 15,6 and 2


Correct Option: , 2

Solution:

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

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