Covalent Bonding

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal and 1 Metal
• 2 Metals
• 2 Noble Gases

Tags

NGSS.MS-PS1-1

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

Tags

NGSS.MS-PS1-1

Which of the following pairs of elements will form a covalent compound?

• sulfur and neon

• hydrogen and carbon

• sodium and chlorine

• P and R

• P and Q

• T ans S

Element Q has an electronic structure 2,5. Element R has an electronic structure 2,7.

What is formed when Q and R react?

• ionic ; QR₃

• covalent; QR₃

• covalent; QR

• ionic ; QR

The diagram below shows the electron arrangement in a molecule of the compound AX₂. Which pair of elements could A and X be?

• A: oxygen; X: hydrogen

• A: sulfur; X: chlorine

Substance Q has the following physical properties.

• It does not conduct electricity when molten.
• It is soluble in organic solvents.
• It is a gas at room temperature.

What is Q?

• sodium chloride

• gold

• sulfur dioxide

• ionic; XY

• covalent; XY

• ionic; XY₂

• covalent; XY₂

How many electrons are involved in bonding in this molecule?

• 2

• 3

• 4

• 8

Which element below is not diatomic?

• hydrogen
• oxygen
• nitrogen
• sulfur