lesson 5.3 review

Electrons are filled according to 3 principles. Which is FALSE ?

• Aufbau principle
• Hund's rule
• Pauli exclusion principle
• spdf principle

Electrons occupy orbital singly before pairing up. State that principle/rule.

• Aufbau principle
• Hund rule
• Pauli exclusion principle
• spdf principle

2^nd energy level contain 2 sublevel. Name the sublevel and max number of electron in each sublevel.

• 1s with 1 electron and 1p with 3 electrons
• 2s with 1 electron and 2p with 3 electrons
• 1s with 1 electron and 1p with 6 electrons
• 2s with 2 electrons and 2p with 6 electrons

Write the full electronic structure for Na with 11 electrons.

• 1s²2s²2p⁶3s¹
• 1s²2s²3p⁶3s¹
• [Ne]3s¹
• 1s²2s²2p⁶3p¹

Write the full electronic structure for Ca with 20 electrons.

• 1s²2s²2p⁶3s²3p⁶
• 1s²2s²2p⁶3s²3p⁶4s⁰
• 1s²2s²2p⁶3s²3p⁶4s¹
• 1s²2s²2p⁶3s²3p⁶4s²

Write the full electronic structure for Cu with 29 electrons.

• 1s²2s²2p⁶3s²3p⁶3d¹⁰4s¹
• 1s²2s²2p⁶3s²3p⁶3d⁹4s²
• 1s²2s²2p⁶3s²3p⁶4s²3d⁹
• 1s²2s²2p⁶3s²3p⁶4s¹3d¹⁰

An orbital can at most hold how many electrons?

• 1 electron
• 2 electrons
• 3 electrons
• 4 electrons

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

• 3
• 6
• 8
• 10

How many electrons does potassium K contain? (click to see image)

• 19
• 39
• 20
• 40

What electron configuration matches an oxygen atom?

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵
• 1s²2s²2p⁴
• 1s²2s²2p⁶
• 1s²2s²2p⁶3s²3p⁶4s²3d¹