Question

# If velocity of an electron in 1st orbit of H atom is V, what will be the velocity in 3rd orbit of Li$$^{2+}$$ ?

A
V
B
V3
C
3V
D
9V

Solution

## The correct option is A $$V$$$$V$$ of H$$_2^{\oplus}$$ = $$\displaystyle\frac{2 \pi Ze^2}{nh}$$or V $$\alpha$$ $$\displaystyle\frac{Z}{n}$$$$\therefore$$ V H$$_2^{\oplus}$$ $$\alpha$$  1  $$\space$$ (Z = 1, n = 1)$$V$$ of Li$$^{2+}$$ $$\alpha$$ $$\displaystyle\frac{3}{3}$$ $$\alpha$$ 1 (Z = 3, n = 3)Therefore, velocity of e$$^-$$ in the third orbit of Li$$^{2+}$$ is the same velocity of an e$$^-$$ in the first orbit of H atomChemistry

Suggest Corrections

0

Similar questions
View More

People also searched for
View More