Chem-100 Exam 2 Review pt. 2

How do you feel about those learning objectives?

How many electrons can fit in the s, p, d, and f sublevels?

• 10, 20, 30, 40
• 1, 3, 5, 7
• 2, 6, 10, 14
• 4, 8, 12, 16

Give the expanded electron configuration for oxygen

• 1s2 2s2 2p3
• 1s2 2s2 2p4
• 1s2 2s2 2p6
• 1s2 2s2 2p2

Give the expanded electron configuration for magnesium

• 1s2 2s2 2p6 3s2
• 1s2 2s2 2p6 4s2
• 1s2 2s2 2p6 3s3
• 1s2 2s2 2p6 3s1

Give the condensed electron configuration for Nitrogen

• [Ne] 2s2 2p3

• [Ne] 1s2 2s2 2p3

• 1s2 2s2 2p3

• [He] 2s2 2p3

Write the electron configuration for an S2- ion

• 1s2 2s2 2p6 3s2 3p7
• 1s2 2s2 2p6 3s2 3p5
• 1s2 2s2 2p6 3s2 3p4
• 1s2 2s2 2p6 3s2 3p6

What is the definition of isoelectronic?

• Atoms, ions, or molecules that have the same number of protons and similar electronic configurations.
• Atoms, ions, or molecules that have the same number of neutrons and similar electronic configurations.
• Atoms, ions, or molecules that have the same number of electrons but different electronic configurations.
• Atoms, ions, or molecules that have the same number of electrons and similar electronic configurations.

What neutral element is isoelectronic with the Cl- ion?

• Si

• P

• S

• Ar

What is the difference between a covalent and an ionic bond?

• A covalent bond is formed when two atoms share electrons, while an ionic bond is formed when one atom transfers electrons to another.
• A covalent bond is weaker than an ionic bond, allowing for easier breakage and formation of new bonds.
• A covalent bond is formed between a metal and a non metal, where an ionic bond is formed between two non metals

• A covalent bond is formed when two atoms repel each other, while an ionic bond is formed when two atoms attract each other.

What is electronegativity?

• Electronegativity is a measure of the tendency of an atom to repel a bonding pair of electrons.
• Electronegativity is a measure of the tendency of an atom to lose a bonding pair of electrons.
• Electronegativity is a measure of the tendency of an atom to form ionic bonds.
• Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.