The velocity of the electron in the hydrogen atom
A. increases with increasing principal quantum number
B. decreases with increasing principal quantum number
C. is uniform for any value of the principal quantum number
D. first increases and then decreases with principal quantum number
Answer: Option B
A. 99.7 × 10-12 m
B. 199.4 × 10-12 m
C. 199.4 × 10-18 m
D. 99 × 10-6 m
A. $$\exp \left( { - \frac{{h\nu }}{{{K_B}T}}} \right)$$
B. $${\left[ {1 - \exp \left( { - \frac{{h\nu }}{{{K_B}T}}} \right)} \right]^{ - 1}}$$
C. $$\exp \left( { - \frac{{h\nu }}{{{K_B}T}}} \right){\left[ {1 - \exp \left( { - \frac{{h\nu }}{{{K_B}T}}} \right)} \right]^{ - 1}}$$
D. $$\exp \left( { - \frac{{h\nu }}{{2{K_B}T}}} \right){\left[ {1 - \exp \left( { - \frac{{h\nu }}{{{K_B}T}}} \right)} \right]^{ - 1}}$$
A. 4 × 104 (nm)2
B. 10$$\sqrt 2 $$ (nm)1/2
C. $$\sqrt 2 $$ /10 (nm)-1/2
D. 0.1 (nm)-1/2
A. $$\Delta \varepsilon _n^{\left( 1 \right)} = \gamma $$
B. $$\Delta \varepsilon _n^{\left( 1 \right)} = {\gamma ^2}$$
C. $$\Delta \varepsilon _n^{\left( 1 \right)} = {\gamma ^{ - 1}}$$
D. $$\Delta \varepsilon _n^{\left( 1 \right)} = 0$$
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