Question

1. 1. What is themolar % composition of Cl in carbon tetrachloride?

Choose oneanswer.

	A. 92.2%
	B. 23.0%
	C. 71.7
	D. 46.1%
	E. 7.8%

2. I2. n thecorrect Lewis structure for methane (CH₄) molecule, howmany unshared electron pairs surround the carbon?

Choose oneanswer.

	A. 4
	B. 8
	C. 2
	D. 0

3. 3. Choose the correct order of elements from most to leastelectronegative.

Choose oneanswer.

	A. Zr, Mo, Cd, As,Cl
	B. Cl, As, Cd, Mo,Zr
	C. Cl, As, Mo, Zr,Cd
	D. Cl, As, Zr, Mo,Cd

4. 4. How many molecules are present in 0.85 moles ofcobalt nitrate?

Choose oneanswer.

	A. 5.12 x 10^23
	B. 6.02 x 10^23
	C. 180.93
	D. 2.55 x 10^23

5. I5. n ionicbonds, valence electrons are

Choose oneanswer.

	A. ignored.
	B. unequallyshared.
	C. destroyed.
	D. transferred.
	E. equallyshared.

6. 6. Place these elements in the order of smallest atomic radiusto largest atomic radius.

Choose oneanswer.

	A. Cl, As, Cd, Mo, Zr,Cs
	B. K, Ca, Sc, Ti, V,Cr
	C. K, Ca, Sc, Ti, V,Cr
	D. Xe, Kr, Ar, Ne, He,H

7. 7. Molecular Bonds may be produced by any of the followingprocesses involving electrons EXCEPT

Choose oneanswer.

	A. gaining ofelectrons
	B. losing theelectrons
	C. splitting ofelectrons
	D. sharing theelectrons

8. 8. Empirical formula C3H7 is found to have a molecular weightof 86 g/mole. What is the molecular formula? (Numbers on thefollowing choices are subscripts)

Choose oneanswer.

	A. CH
	B. CH2
	C. H2O
	D. C6H14