Understanding Electron Configurations

What is the electron configuration notation for oxygen?

• 1s² 2s² 2p⁴

• 1s² 2s² 2p³

• 1s² 2s² 2p²

• 1s² 2s² 2p⁵

Describe the shape of an s orbital.

• The shape of an s orbital is flat and circular.

• The shape of an s orbital is spherical.

• The shape of an s orbital is triangular.

• The shape of an s orbital is dumbbell-shaped.

How many valence electrons does carbon have?

• 2

• 6

• 8

• 4

What is the maximum number of electrons in a p orbital?

• 2

• 8

• 4

• 6

Explain the significance of valence electrons in bonding.

• Valence electrons only affect physical properties, not bonding.

• Valence electrons are irrelevant in chemical reactions.

• Valence electrons are significant in bonding because they determine how atoms interact and bond with each other, influencing the formation and type of chemical bonds.

• All electrons in an atom participate equally in bonding.

What is the electron configuration for sodium?

• 1s² 2s² 2p⁶ 3s¹

• 1s² 2s² 2p⁶ 3s²

• 1s² 2s² 2p⁶ 3p¹

• 1s² 2s² 3p⁶ 3s¹

Identify the type of orbital that can hold a maximum of 10 electrons.

• f-orbital

• d-orbital

• s-orbital

• p-orbital

How do you determine the number of unpaired electrons in an atom?

• Determine the atom's mass number.

• Identify the atom's atomic number.

• Count the unpaired electrons in the atom's electron configuration.

• Count the total number of electrons in the atom.

What is the electron configuration for a transition metal?

• [noble gas] ns^1 (n-1)d^x

• [noble gas] ns^2 (n-1)d^10

• [noble gas] ns^2 (n-1)d^x

• [noble gas] ns^2 (n-1)d^5

Describe the shape of a d orbital.

• A d orbital has a single lobe extending in one direction.

• The shape of a d orbital is generally described as having four lobes in a cloverleaf pattern, with one orbital (dz2) featuring a ring.

• The shape of a d orbital is spherical with no lobes.

• The d orbital is shaped like a straight line with two ends.