The Whole Configuration
Write the full electron configuration for lithium.
1s² 2s¹
Identify the element: 1s² 2s²
Beryllium (Be)
Draw the orbital notation for carbon.
1s [↑↓] 2s [↑↓] 2p [↑][↑][ ]
Write the noble gas notation for sodium.
[Ne] 3s¹
Which rule states that electrons fill the lowest-energy orbitals first?
Aufbau Principle
Write the full electron configuration for oxygen.
1s² 2s² 2p⁴
Identify the element: 1s² 2s² 2p⁵
Flourine (F)
Draw the orbital notation for oxygen.
1s [↑↓] 2s [↑↓] 2p [↑↓][↑][↑]
Write the noble gas notation for sulfur.
[Ne] 3s² 3p⁴
Which rule states that electrons fill empty orbitals before pairing up?
Hund’s rule
Write the full electron configuration for chlorine.
1s² 2s² 2p⁶ 3s² 3p⁵
Identify the element: 1s² 2s² 2p⁶ 3s² 3p³
Phosphorus
Identify the element represented by: 1s [↑↓] 2s [↑↓] 2p [↑↓][↑↓][↑]
Flourine
Identify the element: [Ar] 4s²
Calcium
Which rule states that an orbital can hold no more than two electrons, and they must have opposite spins?
Pauli exclusion principle
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶
Identify the element: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁵
Manganese (Mn)
Identify the element represented by: 1s [↑↓] 2s [↑↓] 2p [↑↓][↑↓][↑↓] 3s [↑↓] 3p [↑][↑][↑]
Phosphorus
Write the noble gas notation for iron
[Ar] 4s² 3d⁶
A student places two upward arrows in the same orbital: [↑↑]. Which rule was violated?
Pauli exclusion principle
Write the full electron configuration for thorium.
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f²
Identify the element: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f14 5d4
Tungsten (W)
Draw the orbital notation for Nickle (Ni)
1s [↑↓]
2s [↑↓]
2p [↑↓][↑↓][↑↓]
3s [↑↓]
3p [↑↓][↑↓][↑↓]
4s [↑↓]
3d [↑↓][↑↓][↑↓][↑][↑]
Write the noble gas notation for xenon.
[Kr] 5s2 4d10 5p6
A student writes nitrogen’s 2p orbitals as [↑↓][↑][ ]. Which rule was violated?
Hund’s rule