Grade 11Mechanics
Find the ratio between the radii of helium+ion and hydrozen atom
Find the ratio between the radii of helium+ion and hydrozen atom
1 Answer
Arun
Radius of an electron is given by 0.529 X n2/z
Lets take two cases:(1) and (2)
Case 1, n=1
Radius of electron in hydrogen atom= 0.529 x 1/1
Radius of electron in helium atom= 0.529 x ½
Ratio of these radius= 1:1/2
Case 2, n=2
Radius of electron in hydrogen=0.529 x 4/1
Radius of electron in helium= 0.529 x 4//2
Ratio of these radii= 1:1/2
Thus the ratio is always the same which 2:1(H:He)
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