Quantum Mechanical Model= Electronic Configuration

Which symbol is used for the Principal Quantum Number?

• l

• m

• n

• s

Which sublevels are present when n = 4?

• s, p

• s, p, d

• s, p, d, f

• s only

Which orbital shape corresponds to the 'p' sublevel?

• Spherical

• Dumbbell-shaped

• Cloverleaf-shaped

• Complex flower-shaped

What is the relationship between the number of orbitals in a sublevel and the number of electrons it can hold?

• Each orbital can hold 1 electron

• Each orbital can hold 2 electrons

• Each orbital can hold 4 electrons

• Each orbital can hold 8 electrons

Which sublevel has the most complex orbital shapes?

• S

• P

• D

• F

How many total electrons are present in an atom with the electron configuration 1s² 2s² 2p⁶ 3s²?

• 8

• 10

• 12

• 18

Tags

NGSS.HS-PS1-1

A student is filling electrons into orbitals for an atom. According to the rules provided, what is the correct order for filling the orbitals?

• Fill the highest energy orbitals first, then the lowest

• Fill the lowest energy orbitals first, then the higher ones

• Fill orbitals randomly

• Fill only paired electrons first

What happens after each orbital in a subshell has one electron, according to Hund’s Rule?

• Electrons start pairing with opposite spins

• Electrons leave the atom

• Electrons remain unpaired

• Electrons change their energy level

What does the sum of superscripts in an electron configuration represent?

• The total number of protons in the atom

• The total number of neutrons in the atom

• The total number of electrons in the atom

• The atomic mass of the atom

Which of the following is the correct Noble Gas electron configuration for lawrencium (Lr)?

• [Rn] 7s2, 5f14, 6d1

• [Xe] 6s2, 4f14, 5d10

• [Kr] 5s2, 4d10, 5p6

• [Ar] 4s2, 3d10, 4p6

Tags

NGSS.HS-PS1-1