Element A and B have atomic numbers 18 and 16 respectively Which of these two would be more reactive and - Science - Structure of the Atom

Question

Element A and B have atomic numbers 18 and 16 respectively Which
of these two would be more reactive and why?

Khushi Choudhary · Accepted Answer

electronic configuration of element A is-
K shell-2 electrons
L shell-8 electrons
M shell-8 electrons
so, valency of element A is 8-8=0
electronic configuration of element B is-
K shell- 2 electrons
L shell- 8 electrons
M shell- 6 electrons
so, valency of element B is 8-6=2
valency is the combining capacity or power of an
element
THE ATOMS OF ELEMENTS HAVING A COMPLETELY FILLED OUTERMOST
SHELL SHOW LITTLE CHEMICAL ACTIVITY AND ARE LESS REACTIVE AND THEIR
COMBINING CAPACITY OR VALANCY IS ZERO
HERE, element A has a valency=0 and B has a valency=2
Therefore, element A is les reactive than element B
T
M

Element A and B have atomic numbers 18 and 16 respectively.Which of these two would be more reactive and why?