Question

velocity of electron in 3rd shell of Li2is (c=velocity of light) A(1. 1/137 c) 2(.1/274 )C ( 3.2/137c)

Answer 1

Velocity of electron C×z/137×n
Z=Atomic no
N=orbit no
C=speed of light
Therefore C×3/137×3=c/137
Old mark my answers brainleast

Answer 2

Hii Dear,

◆ Answer -

v = 1/137 c

● Explanation -

# Given -

For 3rd shell of Li, Z = 3 & n = 3

# Solution -

Speed of electron in nth orbit of atom is given by -

v = Ze² / 2εnh

Substitute values,

v = 3 × (1.6×10^-19)^2 / (2 × 8.85×10^-12 × 3 × 6.6×10^-34)

v = 2.19×10^6 m/s

Speed of this electron with speed of light will be -

v/c = 2.19×10^6 / 3×10^8

v/c = 0.0073

v = 0.0073 c

v = 1/137 c

Best luck Bud..