Question

#3 chemistry a schoology 2025

1. draw and label the protons, neutrons, and electrons for the following atoms on your paper.

| hydrogen-1 |
| hydrogen-2 |
| hydrogen-3 |
did you write the answer on your assignment paper?
○ yes
○ no

Explanation:

Step1: Recall Hydrogen Isotope Properties

Hydrogen has an atomic number \( Z = 1 \), so protons (\( p^+ \)) = 1, electrons (\( e^- \)) = 1 (neutral atom). Neutrons (\( n \)) = mass number (\( A \)) - atomic number (\( Z \)).

Step2: Analyze Hydrogen-1 (\( ^1_1\text{H} \))

• Protons: \( p^+ = 1 \) (atomic number)
• Neutrons: \( n = A - Z = 1 - 1 = 0 \)
• Electrons: \( e^- = 1 \) (neutral, so equal to protons)

Step3: Analyze Hydrogen-2 (\( ^2_1\text{H} \), Deuterium)

• Protons: \( p^+ = 1 \)
• Neutrons: \( n = 2 - 1 = 1 \)
• Electrons: \( e^- = 1 \)

Step4: Analyze Hydrogen-3 (\( ^3_1\text{H} \), Tritium)

• Protons: \( p^+ = 1 \)
• Neutrons: \( n = 3 - 1 = 2 \)
• Electrons: \( e^- = 1 \)

Step5: Draw and Label

For each isotope:

• Hydrogen-1: Draw a nucleus with 1 proton (no neutrons) and 1 electron orbiting. Label \( p^+ = 1 \), \( n = 0 \), \( e^- = 1 \).
• Hydrogen-2: Draw a nucleus with 1 proton and 1 neutron, 1 electron orbiting. Label \( p^+ = 1 \), \( n = 1 \), \( e^- = 1 \).
• Hydrogen-3: Draw a nucleus with 1 proton and 2 neutrons, 1 electron orbiting. Label \( p^+ = 1 \), \( n = 2 \), \( e^- = 1 \).

Answer:

• Hydrogen - 1: Protons = 1, Neutrons = 0, Electrons = 1
• Hydrogen - 2: Protons = 1, Neutrons = 1, Electrons = 1
• Hydrogen - 3: Protons = 1, Neutrons = 2, Electrons = 1

(For drawing, represent the nucleus (protons + neutrons) and electron(s) around it, labeling each particle count as above.)