Question 567: Atoms & Nuclei

Question

Given the value of Rydberg constant is 107 m$$-$$1, the wave number of the last line of the Balmer series in hydrogen spectrum will be

Accepted Answer

The wave number of the last line of the Balmer
series in hydrogen spectrum is given by
$${1 \over \lambda } = R\left( {{1 \over {{2^2}}} - {1 \over {{\infty ^2}}}} ight)$$
= $${R \over 4}$$ = $${{{{10}^7}} \over 4}$$ = 0.25 $$ 	imes $$ 10
7
m
$$-$$1

Answer

0.25 $$ 	imes $$ 107 m$$-$$1

Answer

2.5 $$ 	imes $$ 107 m$$-$$1

Answer

0.025 $$ 	imes $$ 104 m$$-$$1

Answer

0.5 $$ 	imes $$ 107 m$$-$$1

Atoms & Nuclei

Given the value of Rydberg constant is 107 m$-$1, the wave number of the last line of the Balmer series in hydrogen spectrum will be

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