Question 1

Which transition in the hydrogen atom Balmer series emits light of the lowest frequency?

Accepted Answer

From level 3 to level 2

Question 2

According to the periodic trends, which property increases as you move down a group in the periodic table?

Accepted Answer

Atomic radius

Question 3

Which of the following best explains why the first ionization energy decreases as you move down a group?

Accepted Answer

The outermost electron is farther from the nucleus

Question 4

Which of the following transitions in the hydrogen atom emits the highest energy photon?

Accepted Answer

From level 6 to level 2

Question 5

What is the trend for metallic character as you move across a period from left to right?

Accepted Answer

It decreases

Question 6

Which of the following best describes the reason for the trend in atomic radius across a period?

Accepted Answer

The effective nuclear charge increases

Question 7

If an electron in a hydrogen atom falls from level 5 to level 2, what color of light is most likely emitted?

Accepted Answer

Blue

Question 8

Which property does NOT have a clear trend as you move down a group in the periodic table?

Accepted Answer

Electron affinity

Question 9

Why does metallic character increase as you move down a group?

Accepted Answer

Ionization energy decreases

Question 10

Which of the following statements is true about the emission lines in the Balmer series of hydrogen?

Accepted Answer

They result from electrons falling to the n=2 level

Question 11

Which of the following best describes the trend in first ionization energy across a period?

Accepted Answer

It increases due to increased effective nuclear charge

Question 12

Which transition in the Balmer series would emit light with the shortest wavelength?

Accepted Answer

From level 6 to level 2

Question 13

Which property generally decreases as you move from left to right across a period?

Accepted Answer

Atomic radius

Question 14

What is the main reason for the increase in atomic radius as you move down a group?

Accepted Answer

Increase in the number of energy levels

Question 15

Which of the following best explains why the emission from n=4 to n=2 is green in the Balmer series?

Accepted Answer

It has an intermediate energy and wavelength between red and blue

General Chemistry I: Comprehensive Study Guide and Key Concepts

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