Question 1

Which of the following best describes the trend in atomic radius as you move down a group in the periodic table?

Accepted Answer

Atomic radius increases due to the addition of electron shells.

Question 2

Which group does magnesium (Mg) belong to in the periodic table?

Accepted Answer

Alkaline Earth Metals

Question 3

What is the effective nuclear charge ($$Z_{	ext{eff}}) $$experienced by a valence electron in sodium ($$Na) if $$the atomic number is 11 and the shielding constant ($$S) is 10$$?

Accepted Answer

$$Z_{	ext{eff}} = 11 - 10$$

Question 4

Which of the following elements has the highest ionization energy?

Accepted Answer

Argon ($$Ar)$$

Question 5

Which of the following atoms has the lowest first ionization energy?

Accepted Answer

Lithium ($$Li)$$

Question 6

Which of the following elements has the greatest electron affinity?

Accepted Answer

Oxygen ($$O)$$

Question 7

Which of the following elements has the lowest electronegativity?

Accepted Answer

Potassium ($$K)$$

Question 8

Which of the following statements about metals is correct?

Accepted Answer

Metals are malleable, lustrous, and good conductors of electricity.

Question 9

Which of the following is generally true regarding noble gases, except for one exception?

Accepted Answer

Noble gases have low melting and boiling points.

Question 10

What is the trend in ionization energy as you move across a period from left to right?

Accepted Answer

Ionization energy increases due to increased nuclear charge.

Question 11

Which of the following elements has the smallest atomic radius?

Accepted Answer

Sulfur ($$S)$$

Question 12

Which of the following best explains why transition metals can have multiple oxidation states?

Accepted Answer

Their electrons are easily removed from both s and d orbitals.

Question 13

Which of the following elements is most likely to form a cation with a $$+2$$ charge?

Accepted Answer

Magnesium ($$Mg)$$

Question 14

Which of the following atoms has the highest second ionization energy?

Accepted Answer

Sodium ($$Na)$$

Question 15

Which of the following elements is most likely to be found as a diatomic molecule in nature?

Accepted Answer

Oxygen ($$O)$$

Question 16

Which of the following best describes the trend in electronegativity as you move across a period?

Accepted Answer

Electronegativity increases due to increased nuclear charge.

Question 17

Which of the following elements is most likely to gain an electron to achieve a stable configuration?

Accepted Answer

Chlorine ($$Cl)$$

Question 18

Which of the following best describes the relationship between atomic radius and ionization energy?

Accepted Answer

As atomic radius increases, ionization energy decreases.

Question 19

Which of the following elements is most likely to be a good conductor of electricity?

Accepted Answer

Magnesium ($$Mg)$$

Question 20

Which of the following best describes the trend in metallic character as you move from top right to bottom left of the periodic table?

Accepted Answer

Metallic character increases.

Periodic Properties and Atomic Structure: Study Notes for General Chemistry

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