Question

(b) Z with electronic configuration 2,8,7.
8. Write three main functions of the nervous system.​

Answer 1

Answer:

1. Z is Chlorine

2.

a) Controls Hormonal System(Pituatary gland which is controlled by Hypothalamus)

b) Movement of our body

c) Invoulantry actions such as Breathing, Heart Beat

Explanation:

1. Total No. of electron = 17e => atomic no = 17

=> element is chlorine

Answer 2

Explanation:

B) the element is Chlorine, because,

Z is the atomic number,

8) Firstly,

1) Nervous system helps us to coordinate and properly work,

2) Its also helps us from many dangerous or harmful things for us, i.e, reflex action

3) Hence ,there are many other usefull functions performed by it .