Question

Write the symbol and valency of bismuth.

Answer 1

• Bismuth is a chemical element with the symbol $\text{'}\mathrm{Bi}\text{'}$ and atomic number 83.
• Its electronic configuration is [2, 8, 18, 32, 18, 5]
• Since in the outermost shell, it has 5 electrons then its valency will be (8 - 5) = 3

Hence bismuth ion is represented as $\text{'}{\mathrm{Bi}}^{3+}\text{'}$.