Atomic Structure Practice Test 5

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*Category:*
**Atomic Structure**

**If the principle quantum number n = 6, the correct sequence of filling of electron will be : **

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*Category:*
**Atomic Structure**

**Which of the following statements on quantum numbers is not correct?**

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*Category:*
**Atomic Structure**

**Which of the following statements is correct?**

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*Category:*
**Atomic Structure**

4. **The de Broglie wavelength of a particle of mass 1 gram and velocity $100ms_{−1}$**

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*Category:*
**Atomic Structure**

5. **The correct statement among the following is -**

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*Category:*
**Atomic Structure**

**In 'Aufbau principle', the term Aufbau represents :**

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*Category:*
**Atomic Structure**

7. Which one of the following set of quantum numbers is not possible for a 4p electron?

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*Category:*
**Atomic Structure**

8. **In 1897, _____ established their electric charge by the application of electric field**

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*Category:*
**Atomic Structure**

9. **electronic configuration of species M ^{+2} Is 1S2 2s2 2p6 3s2 3p6 3d6 and its atomic weight is 56 number of neutrons in the nucleus of species M is**

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*Category:*
**Atomic Structure**

10. **4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is**

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*Category:*
**Atomic Structure**

**Electron pairs occupy ****localized**** orbitals. Their orbitals are oriented in such a way that the repulsion between electron clouds becomes:**

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*Category:*
**Atomic Structure**

12. **Electronic configuration of calcium atom can be written as**

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*Category:*
**Atomic Structure**

13. **For a given electron configuration, the term with maximum multiplicity has the lowest energy. This rule was proposed by-**

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*Category:*
**Atomic Structure**

14. **The correct order of total number of node of atomic orbitals is-**

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*Category:*
**Atomic Structure**

15. ** Another name for positive rays is**

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*Category:*
**Atomic Structure**

16. **correct order of increasing energy in the atom of titanium?**

**(At. no. Z = 22)**

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*Category:*
**Atomic Structure**

17. **Which of the following statements are correct?**

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*Category:*
**Atomic Structure**

**What is the total number of radial and angular nodes present in $5f$ orbital ?**

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*Category:*
**Atomic Structure**

19. **Pick one with Highest Energy**

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*Category:*
**Atomic Structure**

20. **Electronic configuration of calcium atom can be written as**

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*Category:*
**Atomic Structure**

21. **The e/m value for the positive rays is always____ than that of electrons**

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*Category:*
**Atomic Structure**

22. **The energy of electron is maximum at **

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*Category:*
**Atomic Structure**

23. **Proton name suggested for positive particles by **

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*Category:*
**Atomic Structure**

24. **Calculate number of spectral lines obtained when electron jumps from n=5 to n=1**

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*Category:*
**Atomic Structure**

25. **How many electrons can fit in when have given n = 3 and l = 1?**

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*Category:*
**Atomic Structure**

26. **An ion has 18 electrons in the outermost shell, it is**

**Explanation:-**

**The probability of finding electron at the nucleus is always zero.****The probability of finding electron increases as one moves away from the nucleus. At a distance of 0.53 A**^{0}, the probability of finding electron is maximum. It is called as the Bohr's first radius.

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*Category:*
**Atomic Structure**

27. **The maximum probability of finding an electron is at distance of**

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*Category:*
**Atomic Structure**

28. **The degenerate orbitals have _____ Energy**

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*Category:*
**Atomic Structure**

29. **Number of unpaired electrons in N _{2}^{+} is/are**

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*Category:*
**Atomic Structure**

30. **Nickel has atomic number 28. Choose the correct electronic configuration for Nickel.**

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*Category:*
**Atomic Structure**

31. **for which gas the e/m ratio of positive rays is Greater**

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*Category:*
**Atomic Structure**

**What are the maximum numbers of electrons that can be associated with the following set of quantum numbers? $n=3$, $l=1$ and $m=1$.**

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*Category:*
**Atomic Structure**

33. **Two electrons occupying the same orbital are distinguished by**

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*Category:*
**Atomic Structure**

**Hund's rule states that :**

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*Category:*
**Atomic Structure**

35. **Maximum number of total nodes is present in:**

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*Category:*
**Atomic Structure**

36. **Electronic configuration of copper is?**

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*Category:*
**Atomic Structure**

37. **Which of the following sets of quantum number is not possible?**

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*Category:*
**Atomic Structure**

38. **for Positive Rays Discovery Heavier the gas, _____ the e/m value**

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*Category:*
**Atomic Structure**

39. **Who Observed that , When a large potential difference is applied between electrodes, it is observed that while cathode rays are travelling away from cathode**

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*Category:*
**Atomic Structure**

40. ** The nondirectional orbital has _______ value of azimuthal quantum number.**

**Explanation: **

**$Hund’srule$: every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin.**

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*Category:*
**Atomic Structure**

41. **If the electronic structure of oxygen atom is written as 1s2, 2s2**** it would violate**

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*Category:*
**Atomic Structure**

42. **When the 3d orbital is complete, the new electron will enter in:**

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*Category:*
**Atomic Structure**

43. **Orbitals having two spherical nodes is -**

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*Category:*
**Atomic Structure**

44. **All the three p-orbitals have same energy in the absence of magnetic field and are called ________orbital's**

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*Category:*
**Atomic Structure**

**The atomic orbital is:**

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*Category:*
**Atomic Structure**

46. **when an electron of charge ‘e’ and mass ‘m’ moves with velocity ‘v’ about the nuclear change Ze in the circular orbit of radius ‘r’ the P.E of electron is given by**

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