Question

1. calculate the number of valence electrons in hydrogen cyanide, hcn. valence electrons

Explanation:

Step1: Determine valence electrons for each atom

• Hydrogen (\(H\)): Group 1, has \(1\) valence electron.
• Carbon (\(C\)): Group 14, has \(4\) valence electrons.
• Nitrogen (\(N\)): Group 15, has \(5\) valence electrons.

Step2: Sum up the valence electrons

$$1 + 4+5=10$$

Answer:

\(10\)