Structure of At...

If ionization potential for hydrogen atom is 13.6 eV, then ionization potential for He⁺ will be

Non-directional orbital is

In a multi-electron atom, which of the following orbitals described by the three quantum numbers will have the same energy in the absence of magnetic and electric fields ?
I . n = 1, l = 0, m = 0
II. n = 2, l = 0, m = 0
III. n = 2, l = 1, m = 1
IV n = 3, l = 2, m = 1
V. n = 3, l = 2, m = 0

Which of the following statements in relation to the hydrogen atom is correct ?

Which of the following is non-permissible ?

The electronic configuration of Cu is

The electrons identified by quantum numbers n and l
I. n = 4, l = 1
II. n = 4, l = 0
III. n = 3, l = 3
IV . n = 3, l = 1
can be placed in order of increasing energy as

For the valency electron in copper, the four quantum numbers are

Which of the following laws will represent the pairing of electron in a subshell after each orbital is filled with one electron ?

The representation of the ground state electronic configuration of He by box - diagram as ↑↑ is wrong because it violates