Four atoms are shown by their symbols: 1: $^{{12}}_6\text{C}$, 2: $^{{14}}_6\text{C}$, 3: $^{{14}}_7\text{N}$, 4: $^{{29}}_{14}\text{Si}$. Which of these atoms contain more neutrons than protons?
- A1 and 2
- B2 and 3
- C2 and 4
- D3 and 4
Chemistry 0620 · IGCSE · Isotopes
Four atoms are shown by their symbols: 1: $^{{12}}_6\text{C}$, 2: $^{{14}}_6\text{C}$, 3: $^{{14}}_7\text{N}$, 4: $^{{29}}_{14}\text{Si}$. Which of these atoms contain more neutrons than protons?