Question

the group number and period number respectively of an element with atomic number 8 is?

Answer 1

Element with atomic number 8 is oxygen.
Thus group number of oxygen is Group 16.
Period of oxygen is 2nd period.

HENCE THE CORRECT OPTION IS B.16,2.

Hope it helps u...

Answer 2

Answer:

The group number and the period number of an element with atomic number 8 is 6 and 2 respectively.

Explanation:

Step 1 : Write down the electron configuration from the given atomic number.

We write this below :

= 2 : 6

Step 2 : Analyze the atom in terms of its energy levels and valence electrons.

The energy levels are 2.

The valence electrons are 6.

The number of the energy levels give the period of the element whereas the valence electrons give the group of the element.

Step 3 : Place the element accordingly.

The element is in group 6 and in period 2.