Chemistry (Bonding)

The maximum number of electrons that can be in the outer energy level of most atoms is...

• 2

• 4

• 6

• 8

How are covalent bonds explained?

• When one atom takes the other atom's electron
• When the atom shares an electron with an another atom
• When the two nucleus merge
• When the neutrons leave the nucleus

In chemical compounds, covalent bonds form when

• the electronegativity difference between two atoms is very large.
• electrons are completely transferred between two metals.
• pairs of electrons are shared between two nonmetal atoms.
• two nonmetal atoms are attracted to each other by opposite charges.

What region of the periodic table contains atoms that form covalent bonds?

• the left side
• the middle
• the right side
• top left

NO

• mononitrogen monoxide

• nitrogen oxide

• nitrogen monoxide

• nitrate monoxide

What is the correct formula for this molecule?

• NH
• N₃H
• NH₃
• NH₄

Dihydrogen monoxide

• H₃O₂

• water

• H₂O

• HO₂

Which of the following is described as the basic unit of matter?

• Element
• Atom
• Molecule
• Compound

Why type of bond is forming between the atoms in the diagram?

• Ionic
• Covalent

Is this image an example of covalent bonding?

• Yes
• No