Question

what is a bond between a positive and a negative ion called?
metallic bond
ionic bond
covalent bond
question 2
what is the definition of a covalent bond?
a bond between two positive ions
a bond between two negative ions
a bond between a positive and a negative ion
a bond between two atoms
question 3
how do an ionic bond and a covalent bond differ?
an ionic bond is an attraction between oppositely charged ions. a covalent bond is a sharing of electrons between atoms.
a covalent bond is an attraction between oppositely charged ions. an ionic bond is a sharing of electrons between atoms.
there is no difference. both an ionic bond and a covalent bond share electrons.
there is no difference. both an ionic bond and a covalent bond are attractions between oppositely charged ions.

Explanation:

• Question 1: An ionic bond is formed by the electrostatic attraction between a positive ion (cation) and a negative ion (anion). A metallic bond is between metal atoms involving a sea of delocalized electrons. A covalent bond involves sharing of electrons between atoms.
• Question 2: A covalent bond is a bond between two atoms where they share electrons. Bonds between ions (positive - positive or negative - negative or positive - negative) are ionic or not stable (like positive - positive or negative - negative which repel).
• Question 3: Ionic bonds are attractions between oppositely charged ions. Covalent bonds are sharing of electrons between atoms.

Answer:

• Question 1: ionic bond
• Question 2: a bond between two atoms
• Question 3: An ionic bond is an attraction between oppositely charged ions. A covalent bond is a sharing of electrons between atoms.