idnetify CL, Br, I ions in NaCL, NaBr, Nal solution respectively.

Question 1

a mixture is prepared by adding MnO2 and concentrated H2SO4 to the salt solution. Why do we heat the mixture after adding concentrated H2SO4 to it?

Answer 1

heating the mixture would increase the rate of reaction of oxidation, heat also causes the H2SO4 to become more concentrated through evaporation of water.

Question 2

why are chlorine bromine and iodine placed in the same group of the periodic table?

Answer 2

They all have 7 electron in their valence shell

Question 3

which element of the halogen family exists in the liquid state and solid state?

Answer 3

Bromine is the liquid
Iodine is the solid

Question 4

what is the difference between CL and CL2

Answer 4

CL-
-its chlorine atom
-its an ion
-it does not exist naturally

CL2
- it’s a chlorine gas
-its a molecule
- it exists naturally

Question 5

how is Halide ion formed from halogen atom

Answer 5

the halogen atom gains electron to form halide atom

Question 6

which element of halogen does not exist naturally

Answer 6

ASTATINE and TENNESSINE

Question 7

which halogen is radioactive

Answer 7

ASTATINE

Question 8

why concentrated sulphuric acid causes severe burn

Answer 8

concentrated H2SO4 is an extremely strong acid when it comes in contact with our skin it cause chemical burns through process known as tissue destruction.