Electronic Congratulation

No two electrons in an orbital have same set of all four quantum numbers is according to

• AUfbau Principle

• Pauli Principle

• n+l Rule

• Hund's Rule

Which rule is violated in following electronic configuration 1s2, 2s2, 2px2, 2py1 2pz0?

• Aufbau

• Pauli

• n+l

• Hund's

Electronic configuration means:

• The arrangement of electrons in an atom
• The arrangement of protons in an atom
• The arrangement of neutrons in an atom
• The arrangement of quarks in an atom

The valence shell electronic configuration of Cu is

• 3s2 3p2

• 4s2 3d1

• 4s2 3d10

• 4s1 3d10

Which of them are not isoelectronic ions?

• Na+ and Mg2+
• O2- and F-
• K+ and Cl-
• Ca2+ and Ar

Aufbau principle is proposed by?

• Friedrich Hund

• Wolfgang Pauli

• Erwin Schrödinger
• Aufbau

An electron stay in same orbital

• Because it is attracted by the nucleus
• Because it is repelled by other electrons
• Because it is stationary
• Because it has a fixed orbit

Two electrons stays in same orbital with

• Same spin and same energy
• Different spin and same energy
• Same spin and different energy
• Different spin and different energy

degenerate orbitals means?

• Orbitals that are completely filled
• Orbitals that have same energy & shape

• Orbitals that are in different energy levels
• Orbitals that are empty

Which of them is not degenerate orbital?

• 1s
• 2p
• 3d
• 4f