Question

The electronic configuration of an element 'X' is 2, 8, 18, 3.
(i) What is its atomic number?
(ii) Are the properties of element 'X' similar to that of element N or F
(iii) Write the period to which 'X' may belong in the periodic table.
(iv) Write the group number of 'X'.​

Answer 1

Explanation:

1.gallium

2.no

3.4

4.13

Answer 2

Atomic number =31 just add the numbers in electronic confirmation

It's properties doesn't resemble with N or F

Period number 4(because 4 shells are present)

Group number 3A(because 3 electrons in valence shell)