Question

Speed of electron in fourth orbit for He⁺ -

• A. 1.095 × 10⁶ m/s
• B. 2 × 10⁵ m/s
• C. 1.095 × 10⁴ m/s
• D. 4 × 10⁷ m/s

Answer 1

Answer: (A)

1.095 × 10⁶ m/s

Answer 2

v_n = v₁ × $\frac{Z}{n}$= $\frac{2 \times 10^{6} \times 2.18}{4}$

v_n = 1.09 × 10⁶ m/s