chemistry

CLASS 10^TH  ATOMIC STRUCTURE BITS

1) Rutherford proposed 'planetary model' based on his ––––––––– scattering experiment.

2) Quantum theory of radiation is proposed by–––––––––

3) Angular momentum is given by nh/2ð where 'h' is ––––––––– constant.

4) E2 − E1 = hí where ' í ' is –––––––––

5) The number of sub-shells present is L- shell is–––––––––

6) The maximum value of azimuthal quantum number 'l ' for the principal quantum number

'n' is–––––––––

7) After filling the 3d orbital, the electron enters into––––––––– orbital.

8) 3d10 4s1 is the valence electronic configuration of–––––––––

9) The distance between the nucleus and outermost orbital gives the –––––––––

10) The valence electronic configuration of Cr ( Z=24) is –––––––––

11) The charge of the nucleus is–––––––––

12) The first atomic model was proposed by–––––––––

13) Planetary model or nuclear model was proposed by–––––––––

14) Energy pockets are called –––––––––

15) Planck explained the phenomena of black body radiation using –––––––––

16) According to Rutherford's atomic model atom is ––––––––– in nature

17) The energy of stationary orbits is–––––––––

18) The angular momentum is said to be–––––––––

19) ––––––––– was awarded the Nobel Prize for his contribution to atomic structure

20) Bohr's theory of atom could not explain the formation of –––––––––

21) ––––––––– proposed the dual nature of the electron.

22) The solutions of Schrödinger's wave equation gave birth to the –––––––––

23) The angular momentum (mvr) of the electron revolving in a stationary orbit is equal to

nh/2ð. where r is–––––––––

24) Principal quantum number proposed by–––––––––

25) Azimuthal quantum number proposed by–––––––––

26) Azimuthal quantum number is also known as –––––––––

27) Magnetic quantum number is proposed by–––––––––

28) If 'l' is the Azimuthal quantum number then magnetic quantum number can have

–––––––––values.

29) Spin quantum Number was proposed by–––––––––

30) A sublevel can accommodate ––––––––– electrons.

31) The shape of the 's' orbital –––––––––

32) All the P - orbital's have ––––––––– shape

33) The ––––––––– provide information regarding the energies of the atomic orbital

34) The correct electronic configuration of Lanthanum ( La = 57 ) is –––––––––

35) Electron configuration of cr ( z = 24 ) is –––––––––

36) The electron configuration of Cu ( Z=Za) is –––––––––

37) Atomic size depends on the ––––––––– quantum number

38) Atomic size is determined by –––––––––

39) Ionization energy is expressed in units of –––––––––