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Practice questions on Atom Models.

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21. The radius of nth orbit in hydrogen is proportional to square of Opt 1 : principal quantum number
A. orbital quantum number
B. spin quantum number
C. magnetic quantum number
D. rincipal quantum number
Explanation:
22. The wavelength of the spectral lines of the Brackett series of hydrogen atom are in the region
A. visible
B. ultraviolet
C. far infrared
D. infrared
Explanation:
23. The total energy of an electron in any atom is
A. zero
B. negative
C. positive
D. infinite
Explanation:
24. A neutral atom has two electrons in K-shell, eight electrons in L-shell and six electrons in M-shell. The total number of s-electrons is
A. 2
B. 4
C. 6
D. 8
Explanation:
25. According to Rutherford atom model, an atom is
A. stable
B. unstable
C. meta stable
D. indivisible
Explanation:
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