Question 1

Which element is the only nonmetal with covalent network bonding?

Accepted Answer

Carbon

Question 2

Which of the following elements would be expected to have the highest melting point?

Accepted Answer

Carbon

Question 3

What is the most common type of chemical bonding found within solid $$I_2$$?

Accepted Answer

Covalent

Question 4

Which Group 5A element would be expected to have the highest melting point?

Accepted Answer

Antimony

Question 5

Under standard conditions, which element would be most easily vaporized?

Accepted Answer

Cesium

Question 6

Which of the following diatomic molecules would be expected to have the greatest density?

Accepted Answer

Iodine

Question 7

List the following elements in order of decreasing density under standard conditions: Magnesium, Bromine, Calcium, Barium, Hydrogen.

Accepted Answer

Barium \u003e Calcium \u003e Magnesium \u003e Bromine \u003e Hydrogen

Question 8

Rank the following elements in order of increasing lattice energy: S, In, K, Ba, Cl.

Accepted Answer

In \u003c K \u003c Ba \u003c S \u003c Cl

Question 9

Which of the following elements will have the lowest electron affinity?

Accepted Answer

Be

Question 10

For Group 5A elements, the ionization energy decreases going down a group because:

Accepted Answer

The highest number of their valence orbital shell increases.

Question 11

Which electron configuration represents a violation of the Auf Bau Principle?

Accepted Answer

$$1s^2$$ $$2s^2$$ $$2p^6$$ $$3s^2$$ $$3p^6$$ $$3d^5$$ $$4s^2$$

Question 12

Which element possesses a -2 charge when it combines with other elements?

Accepted Answer

Se

Question 13

Predict the charge that a gallium ion would possess.

Accepted Answer

+3

Question 14

Select the correct explanation of how D$$_2O $$varies from H$$_2O.$$

Accepted Answer

Heavy water contains the second most abundant isotope of H, while regular water contains the most abundant isotope.

Question 15

Which of the following is a metallic hydride?

Accepted Answer

TiH$$_2$$

Question 16

Write a balanced equation for the reaction of potassium with oxygen to form a superoxide.

Accepted Answer

$$2K (s) + O_2$ (g) \rightarrow 2KO_2 (s)$$

Question 17

Which noble gas forms stable compounds with fluorine?

Accepted Answer

Xenon

Question 18

Which of the following xenon compounds are too unstable to exist?

Accepted Answer

XeI$$_4$$

Question 19

Classify the following compound: BaO$$_2$$

Accepted Answer

Peroxide

Question 20

What is the product when strontium oxide reacts with water?

Accepted Answer

$$SrO (s) + H_2O (l) \rightarrow Sr(OH)_2 (aq)$$

Chemistry of the Nonmetals: Main Group Elements, Hydrogen, Oxides, and Noble Gases

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