Valence Electrons and Ionic Compounds Insights

Which group on the periodic table contains elements with one valence electron?

• Group 2

• Group 1

• Group 14

• Group 13

What is the term used for elements with eight valence electrons?

• Sextet

• Octet

• Quartet

• Duet

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What charge do ions of Group 1 elements typically have?

• +1

• +2

• -1

• -2

Which group of elements generally forms ions with a -2 charge?

• Group 16

• Group 17

• Group 15

• Group 18

Why do elements in the same group often form compounds with similar chemical behavior?

• They are in the same period.

• They have the same number of valence electrons.

• They have the same number of protons.

• They have the same atomic mass.

Which of the following is a group 2 oxide?

• Sodium oxide

• Calcium oxide

• Aluminum oxide

• Sulfur oxide

What are valence electrons?

• Electrons in the innermost energy level

• Electrons in the outermost occupied energy level

• Protons in the nucleus

• Neutrons in the nucleus

Tags

NGSS.MS-PS1-1

What is the role of core electrons in chemical reactions?

• They do not play a significant role.

• They determine the atomic number.

• They form ionic bonds.

• They are donated or shared.

How much more tightly are 1s electrons bound compared to 4s electrons?

• About 100 times more tightly

• Over 600 times more tightly

• About 10 times more tightly

• About 4 times more tightly

Why is it easier to remove valence electrons compared to core electrons?

• Core electrons have higher energy levels.

• Core electrons are in the outermost energy level.

• Valence electrons are bound with less energy.

• Valence electrons are closer to the nucleus.

Tags

NGSS.HS-PS1-1