Question 1

Which of the following elements is least likely to form an ion, based on its position in the periodic table and its electron configuration?

Accepted Answer

Ar

Question 2

Metals tend to lose electrons to become positively charged ions called cations. Which of the following equations correctly represents the formation of a cation from sodium?

Accepted Answer

$$\mathrm{Na} \rightarrow \mathrm{Na}^{+} + e$$^{-}$$

Question 3

Non-metals tend to gain electrons to become negatively charged ions called anions. Which of the following best describes the process for chlorine?

Accepted Answer

$$\mathrm{Cl} + e$$^{-}$$ \rightarrow \mathrm{Cl}^{-}$$

Question 4

Which of the following ions is unlikely to form, based on the periodic table and typical ion formation?

Accepted Answer

$$\mathrm{Al}^{4+}$$

Question 5

Gallium is in Group 3A of the periodic table. What charge would you expect a gallium ion to possess?

Accepted Answer

+3

Question 6

Which of the following statements about main group elements is correct?

Accepted Answer

The atomic number equals the number of protons.

Question 7

Lead (Pb) and Tin (Sn) are exceptions among main group metals because they can have more than one possible charge. Which of the following is a possible charge for lead?

Accepted Answer

+2

Question 8

Which element in the periodic table is most likely to form a $$2^+$$ ion?

Accepted Answer

Mg

Question 9

Why do elements in Groups 4A and 5A rarely form ions?

Accepted Answer

It requires too much energy to lose or gain electrons.

Question 10

Which of the following best explains why noble gases are generally unreactive?

Accepted Answer

They have a full complement of valence electrons.

Question 11

A neutral atom of calcium has how many protons and electrons?

Accepted Answer

20 protons and 20 electrons

Question 12

Which of the following elements is most likely to form a $$-1$$ ion?

Accepted Answer

Cl

Question 13

If an atom has 17 protons and 18 electrons, what is its charge?

Accepted Answer

$$-1$$

Question 14

Which of the following is a transition metal?

Accepted Answer

Fe

Question 15

Which of the following elements is most likely to have multiple possible charges?

Accepted Answer

Fe

Question 16

Which of the following ions is most likely to be found in a compound with chlorine?

Accepted Answer

$$\mathrm{Na}^{+}$$

Question 17

Which of the following elements is most likely to form a $$+2$$ ion in biological systems?

Accepted Answer

Ca

Question 18

Which of the following is a property of main group metals?

Accepted Answer

They tend to lose electrons.

Question 19

Which of the following elements is most likely to form a $$+1$$ ion?

Accepted Answer

Na

Question 20

Which of the following elements is least likely to form a $$+3$$ ion?

Accepted Answer

Na

Ion Formation and Main Group Elements in GOB Chemistry

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