How many electrons are there in the valence quantum level of copper(Atomic, number = 29)?

82.

The atomic number of a certain element is 17. Determine the number of electrons in each shell of the atom.

What are n, l and m value for 2p_x and 3p_z electrons?

How many number of unpaired electrons are present in the ground state of Fe³⁺?(Atomic number of Fe is 26). 

In which plane the probability of finding an electron residing in P_x orbital is zero?

Write the electronic configuration of Cr³⁺. (At. No. of Cr = 24)

How can you say that electron is a universal constituent of all atoms?

What are anode rays? How do they originate? Briefly explain their important properties.

What is the difference in the origin of cathode rays and anode rays?