Question

What is the ratio of radii of electron in 4th and 6th orbits of Li2+?

Answer 1

Explanation:

The radius of Bohr's orbit in hydrogen and hydrogen-like species can be calculated by using the following formula:

r=

4πme

2

n

2

h

2

×

Z

1

=0.529×

Z

n

2

A

o

Where :

n = principal quantum number of orbit. ; Z = atomic number

Hence, r∝n

2

∵z=1 as it is a Hydrogen atom

for 1st orbital; r=1

for second orbital; r=4

for the third orbital; r=9

So, the ratio for Bohr's first, second and third orbit of Hydrogen is 1:4:9.

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Answer 2

11th

Chemistry

Structure of Atom

Bohr's Model for Hydrogen Atom

The ratio of radii of first...

CHEMISTRY

The ratio of radii of first, second and third orbits of hydrogen atom is:

A .

1:4:9

B .

1:3:6

C .

2:4:6

D .

1:2:3

December 30, 2019Lakshmipriya Antony

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ANSWER

The radius of Bohr's orbit in hydrogen and hydrogen-like species can be calculated by using the following formula:

r=4πme2n2h2×Z1=0.529×Zn2Ao

Where :

n = principal quantum number of orbit. ; Z = atomic number

Hence, r∝n2∵z=1 as it is a Hydrogen atom

for 1st orbital; r=1

for second orbital; r=4

for the third orbital; r=9

So, the ratio for Bohr's first, second and third orbit of Hydrogen is 1:4:9.