S2-Q4-Quantum numbers and electronic configuration

The electron configuration of an atom is 1s²2s²2p⁶. The number of electrons in the atom is ---------

• 3

• 6

• 8

• 10

The magnetic quantum number (ml), has value within -------

• 1,2,3,4,5,6,7.

• 0, 1, 2, 3.

• -l to +l

• -1/2 and +1/2

A theory stating that electrons have the trend of taking the orbitals from the lowest energy level to the highest is the theory of... .

• Pauli exclusion’s principle

• building up principle

• Hund’s rule

• Heisenberg’s probability

the following are the examples of the electron configuration which can be abbreviated with noble gas notation, except... .

• 1s¹

• 1s² 2s²

• 1s² 2s² 2p³

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁷

Below are the correct answer of the writing of electron configuration, except... .

• 6f²

• 2p⁵

• 3d⁷

• 4s³

A theory stating that it is forbidden for 2 electrons having the same values of the four atomic quantum numbers is explained by... .

• Hund

• Aufbau

• Pauli

• Schrodinger

How many orbitals are available to hold electrons in the 6^th energy level (n=6)?

• 9

• 16

• 26

• 36

What is the total number of energy sublevels used by an atom of aluminum

(Al₁₃) in the ground state?

• 3

• 7

• 13

• 5

Which of the following statements is true about the 3s and the 4s sublevels?

• These sublevels have the same energy
• These sublevels are the same distance from the nucleus
• These sublevels hold different amounts of electrons
• These sublevels have the same shape

Which of the following quantum number sets is not allowed?

• [n=2 ; l=1 ; ml=+1` ; ms=+1/2 ]

• [n=3 ; l=2 ; ml=+2 ; ms=+1/2 ]

• [n=2 ; l=2 ; ml=+2 ; ms=+1/2 ]

• [n=1 ; l=0 ; ml=0 ; ms=-1/2 ]