QUESTION 22

Which of the following compound has a Molecular (covalent) compound ?

		KBr
		HCl
		FeO
		KNO3

QUESTION 23

Which of the following isotopes of Potassium is the most abundance in nature?

A) Potassium - 42

B) Potassium - 41

C) Potassium - 40

D) Potassium - 39

QUESTION 24

How many of the following ions are polyatomic ?

A) Hydroxide

B) sulfide

C) Fluoride

D) Carbonate

E) cyanide

QUESTION 25

Chromium and chlorine form an ionic compound whose formula is CrCl₃. The name of this compound is __________.

A) chromium ( 3)chlorine

B) chromium(III) chloride

C) chromium trichloride

D) chromium(III) trichloride

QUESTION 26

Which of the following elements are nonmetals ?

nitrogen fluorine potassium strontium Aluminum

Hydrogen iron copper

	A.	5
	B.	4
	C.	3
	D.	6

QUESTION 27

The coorect name of the following compound?

K₂O

	A.	Dipotassium oxide
	B.	Potassium(I) oxide
	C.	Potassium dioxide
	D.	potassium oxide