Question

An element has electronic configuration 2,8,3.What is the atomic number of this element ? to which (i) group and (ii)period this element belong?

Answer 1

your answer:-

e.c =2,8,3

atomic number =2+8+3=13

group is known by valence electrons so it belongs to GROUP 3

period is known by shells it belongs to PERIOD 3

@ananya☺

Answer 2

Answer:

group 3

and

atomic number =13