The ratio of the velocity of an electron in the Bohr orbit of a hydrogen atom to that in the Bohr or — Atomic Structure Chemistry Question
Question
The ratio of the velocity of an electron in the $1^{st}$ Bohr orbit of a hydrogen atom to that in the $3^{rd}$ Bohr orbit of a $Be^{3+}$ ion is:
Answer: C
💡 Solution & Explanation
Velocity $v \propto Z/n$. For H ($Z=1, n=1$), $v_1 \propto 1/1 = 1$. For $Be^{3+}$ ($Z=4, n=3$), $v_2 \propto 4/3$. Ratio $v_1 : v_2 = 1 : 4/3 = 3 : 4$.
💬Ask on WhatsApp →
Still have doubts about this question?
Send it to our AI chemistry tutor on WhatsApp — gets answered in minutes