Question

The element with atomic number 31 belongs to which group and period respectively

Answer 1

Answer:

13th group called "Gallium"

Explanation:

4th period

Answer 2

The element with atomic number 31 belongs to group 13 and period 4 respectively.

Explanation:

Since, it is given that the atomic number of the element is 31. So, its electronic distribution will be as 2, 8, 18, 3. This shows that this element contains 3 valence electrons and therefore, it belongs to group 13 of periodic table.

And, name of this element is gallium. Electronic configuration of gallium is $[Ar]3d^{10}4s^{2}4p^{1}$.

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