NDA CHEMISTRY QUIZ - 15

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Question 1:

Number of core electron present in [Ne]3s1 is 

Question 2:

The orbitals having the same energy are called degenerate orbitals. Which of the following set of orbitals is degenerate for hydrogen atom ?

Question 3:

The second excited state for hydrogen atom is 

Question 4:

The energy required to remove an electron completely from the n = 2 orbit is

Question 5:

Which of the following electronic configuration is most stable ?

Question 6:

Which one of the following is electronic configuration for sulphur atom ?

Question 7:

Electronic configuration of Ni+2 is  

Question 8:

The wavelength of an electron moving with a velocity of 2.05 × 107 m s-1 is

Question 9:

What designation is given to the orbital having n = 5 and l = 4 ?

Question 10:

Which of the following configuration violates the Afbau principle ?