Question

An Element hos E.C: 2, 8, 7
a what is Atomic number?
b Name another Element to which it has Similiar
- Properties?
o It is bigger or smaller than another Element
with Alomic number 16?​

Answer 1

Answer:

cl

Explanation:

atomic no. 17 mark me not as a brainlist

Answer 2

Answer:

( 1)atomic no is equal to no. of electron present in atom like carbon has 6 atomic no

(2)element to which it has similar properties which have same electron configuration

berilium magnesium

neon argon

flourine chlorine