Exploring Elements and Their Properties

What is the valency of oxygen?

• 1

• 2

• 3

• 4

How many valence electrons does chlorine have?

• 5

• 6

• 7

• 8

Which of the following is a cation?

What is the electronic configuration of carbon using shells?

• 2, 4

• 2, 6

• 2, 8

• 2, 2

Which element has an atomic number of 10?

• Neon

• Nitrogen

• Sodium

• Nickel

What is the formula to calculate the atomic mass of an element?

• \text{Number of protons} + \text{Number of neutrons}

• \text{Number of electrons} + \text{Number of neutrons}

• \text{Number of protons} + \text{Number of electrons}

Which of the following is an anion?

What is the valency of nitrogen?

• 1

• 2

• 3

• 4

How many valence electrons does sulfur have?

• 4

• 5

• 6

• 7

What is the electronic configuration of neon using shells?

• 2, 6

• 2, 8

• 2, 2

• 2, 4