Question

31.) The atomic number of three elemts are givenbeland
element Symbol
elements symbol. A B C
atomic number. 5 7 10
:)) write the symbol of the element which belongs
to a group 13, (b) group 15 of the periodic Table
ii)state the period of the periodic lable to which
These elements belong, give reason for your Ans.​

Answer 1

Answer:

A with atomic number 5 is belong to group 13,

B with atomic number 7 is belong to group 15,

C with atomic number 10 is belong to group 18

this atom belong to 2nd period