Final Answer:
Part A:
1. Table completion:
- Row 1: Gallium (Ga), 31, 70, 31, 31, 39, Ga
- Row 2: Cadmium (Cd), 48, 112, 48, 48, 64, Cd
- Row 3: Mercury (Hg), 80, 200, 80, 80, 120, Hg
- Row 4: Bromine (Br), 35, 79, 35, 35, 44, Br
2. i) hydrogen-3
ii) chlorine-35
iii) carbon-14
Part B:
Table completion:
Left side:
- ¹H₁: 1 proton, 0 neutrons, 1 electron
- ²H₁: 1 proton, 1 neutron, 1 electron
- ⁴He₂: 2 protons, 2 neutrons, 2 electrons
- ⁵He₂: 2 protons, 3 neutrons, 2 electrons
- ⁶Li₃: 3 protons, 3 neutrons, 3 electrons
- ⁷Li₃: 3 protons, 4 neutrons, 3 electrons
Right side:
- ¹⁷O₈: 8 protons, 9 neutrons, 8 electrons
- ³⁹K₁₉: 19 protons, 20 neutrons, 19 electrons
- ⁴⁰Ca₂₀: 20 protons, 20 neutrons, 20 electrons
- ²³⁵U₉₂: 92 protons, 143 neutrons, 92 electrons
- ²⁴⁴Pu₉₄: 94 protons, 150 neutrons, 94 electrons
- ⁵⁶Fe₂₆³⁺: 26 protons, 30 neutrons, 23 electrons
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Parent Tip: Review the logic above to help your child master the concept of isotope worksheet.
