Physical Chemistry 1: Atomic Structure Multiple Choice Questions

1. What is the correct order of the stages of Time of Flight mass spectrometry?

Ion drift, Acceleration, Ionisation, Detection

Ionisation, Acceleration, Ion drift, Detection

Acceleration, Ion drift, Ionisation, Detection

Ionisation, Ion drift, Acceleration, Detection

Correct! Wrong!

2. In Mg²⁺ how many electrons are found in an s subshell?

0

2

4

1

Correct! Wrong!

3. Which of the following elements has the lowest 1st Ionisation Energy?

Aluminium

Sulfur

Silicon

Phosphorus

Correct! Wrong!

4. Which of the following statements is NOT correct?

Aluminium has a higher 1st ionisation energy than Magnesium

Neon has a higher 1st ionisation energy than Argon

Chlorine has a lower 1st Ionisation energy than Argon

The 2nd ionisation energy of Neon is higher than it’s 1st Ionisation energy

Correct! Wrong!

5. How many protons are present in 1 atom of ¹⁴C?

14

12

6

8

Correct! Wrong!

6. Which of the following is the correct definition of ‘Isotopes’?

Same molecular formula, different structural formula

Same number of protons, different number of electrons

Same number of neutrons, different number of protons

Same number of protons, different number of neutrons

Correct! Wrong!

7. Which of these atoms has fewest neutrons?

⁷⁰Zn

⁷¹Ga

⁷⁰Ge

⁷²Ge

Correct! Wrong!

8. Which ion has the same number of electrons as ⁸³Kr but 1 less proton and 1 less neutron?

⁸¹ Br^-

⁸²Br^-

⁸²Rb⁺

⁸¹Rb⁺

Correct! Wrong!

9. What is the maximum number of electrons that an orbital in the 3p subshell can hold?

2

3

6

1

Correct! Wrong!

10. Which equation represents the 1st Ionisation Energy of Bromine?

Br(g) → Br⁺(g) + e^-

Br(g) + e^- → Br^-(g)

Br2(l) → 2Br²⁺(l) + 2e^-

Br(l) → Br⁺(l) + e^-

Correct! Wrong!

Gemma Shearer