Galogenlar mavzusiga oid tajribalar

EXERCISE 2

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1. The elements of the seventh main group of the periodic table are called: -________________________________________________________________

2 _________ is characterized by the presence of _______ atoms in the outer energy shell.

3.All halogens are very prone to electrons so they are free ___________

4. Therefore they are ___________ __________ also reacts violently with various ____________________ which can be oxidized.

5. Continue the reaction. FeCl2 + CI2 = ......... ; H2S + J2 = .......

6. Halogens ______________ show positive valence. The maximum positive valence of chlorine, bromine and iodine is _____________, and _______________ is not the positive valence.

7. Negative valence compounds of halogens are ________________stable.

8. The aggregate state of free halogens is their _____________________

9. Halogens are soluble in water ________________

10. Halogens in water ___________ - in alcohol, ether, benzene, gasoline, chloroform and carbon (IV) -sulfide ________________ melted.
EXERCISE 3