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Neet Chem > Atomic Structure > Flashcards

Atomic Structure Flashcards

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1
Q

De Broglie theory was proposed on

A

1924

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2
Q

Rydberg formula was given on

A

1890

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3
Q

Explanation of black body radiation given by

A

Max Planck

1900

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4
Q

Einstein explained photoelectric effect on

A

1905

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5
Q

Balmer gave equation for wave number of visible spectral lines of hydrogen on

A

1885

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6
Q

Photoelectric effect was shown by

A

H Hertz

1887

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7
Q

Wave nature of electromagnetic radiation given by

A

James Maxwell (1870)

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8
Q

Thomson model was given on

A

1898

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9
Q

Thomson was awarded Nobel prize on

A

1906 (physics)

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10
Q

Roentgen discovered x rays on

A

1895

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11
Q

Chadwick discovered neutrons on

A

1932

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12
Q

Charge to mass ratio of e- was given by

A

JJ Thomson in 1897

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13
Q

When did scientists start studying about electrical discharge in partially evacuated gas tubes

A

Mid 1850s

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14
Q

Charge to mass ratio of e-

A

1.7588 x 10^11 C/kg

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15
Q

Radius of atom (Thomson model)

A

10^-10 m

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16
Q

Thickness of gold foil in rutherford experiment

A

100 nm

17
Q

Radius of atom and nucleus (nuclear model)

A

Atom radius : 10^-10 m

Nucleus radius : 10^-15 m

18
Q

% of protium

A

99.985%

19
Q

Percentage of deuterium

A

.015%

20
Q

Radio wave frequency

A

Around 10^6 Hz

21
Q

Microwave frequency

A

Around 10^10 Hz

22
Q

Infrared wave frequency

A

Around 10^13 Hz

23
Q

Max Planck got Nobel prize on

A

1918 (for quantum theory)

24
Q

Threshold frequency of potassium

A

5 x 10^14 Hz

25
Q

Albert Einstein got Nobel prize on

A

1921 (for explanation of photoelectric effect)

26
Q

Electromagnetic wave has both

A

Wave like and particle like properties

27
Q

Spectrum of visible light frequency

A

7.5 x 10^14 Hz to 4 x 10^14 Hz

28
Q

One of the first investigators to use line spectra

A

German chemist, Robert Bunsen

29
Q

R (Rydberg Constant) =

A

1.1 x 10^7 m^-1

30
Q

1/R =

A

912 A°

31
Q

Bohr model of H atom given in

A

1913

32
Q

De Broglie was awarded Nobel prize on

A

1929

33
Q

Heisenberg was awarded Nobel prize on

A

1932

Neet Chem (2 decks)

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