Between which types of elements do ionic bonds occur, and how do electrons act within the bond?(1 point)

Responses
metals and nonmetals, electrons transferred
metals and nonmetals, electrons transferred
metals and metals, electrons freely moving
metals and metals, electrons freely moving
nonmetals and nonmetals, electrons shared
nonmetals and nonmetals, electrons shared
nonmetals and metals, electrons shared

7 answers

Ionic bonds occur between metals and nonmetals, where electrons are transferred from the metal to the nonmetal. Therefore, the correct response is:

metals and nonmetals, electrons transferred.

Which kind of bond would occur between sodium (Na, Group IA) and chlorine (Cl, Group VIIA)?(1 point)
Responses
covalent
covalent
no bond
no bond
ionic
ionic
metallic

The bond that would occur between sodium (Na, Group IA) and chlorine (Cl, Group VIIA) is an ionic bond. Sodium donates an electron to chlorine, resulting in the formation of Na⁺ and Cl⁻ ions. Thus, the correct response is:

ionic.

Why is carbon said to provide a “backbone” in many molecules?(1 point)
Responses
Carbon atoms can form chains and branches with each other, and other atoms can attach to these.
Carbon atoms can form chains and branches with each other, and other atoms can attach to these.
Carbon atoms have full shells of electrons, allowing electrical signals to pass through them easily.
Carbon atoms have full shells of electrons, allowing electrical signals to pass through them easily.
Carbon atoms have long narrow shapes, allowing many other atoms to attach to them.
Carbon atoms have long narrow shapes, allowing many other atoms to attach to them.
Carbon atoms have half-full shells of electrons, allowing electrical signals to pass through them easily.

The correct response is:

Carbon atoms can form chains and branches with each other, and other atoms can attach to these.

This ability to create diverse structures is why carbon is often referred to as providing a "backbone" in many organic molecules.

Which option describes the structure of the electron shells in a neutral carbon atom?(1 point)
Responses
The inner shell is incomplete with three electrons. The outer shell is incomplete with three electrons.
The inner shell is incomplete with three electrons. The outer shell is incomplete with three electrons.
The inner shell is complete with four electrons. The outer shell is incomplete with two electrons.
The inner shell is complete with four electrons. The outer shell is incomplete with two electrons.
The inner shell is complete with two electrons. The outer shell is incomplete with four electrons.
The inner shell is complete with two electrons. The outer shell is incomplete with four electrons.
The inner shell is complete with three electrons. The outer shell is incomplete with three electrons.

The correct option that describes the structure of the electron shells in a neutral carbon atom is:

The inner shell is complete with two electrons. The outer shell is incomplete with four electrons.

In a neutral carbon atom, the electron configuration is 1s² 2s² 2p², which means the inner shell (1s) has 2 electrons and the outer shell (2s + 2p) has a total of 4 electrons.