Which of the following compounds is correct?

• Na₂Cl

• NaCl

• NaCl₂

• Na₂Cl

Tags

NGSS.MS-PS1-1

What is the charge of the ion formed by the element oxygen?

• +2

• -2

• 0

• -1

What group does the ion with a charge of +1 belong to?

• Isotopes

• Anions

• Alkali Metals

• Halogens

• Alkaline Earth Metals

How many electrons are in the valence shell of a chlorine ion with a 1- charge?

• 7

• 5

• 10

• 3

• 8

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following is a cation?

• He

• Cl-

• SO4^2-

• Na+

Which of the following is a polyatomic ion?

• He

• Cl-

• SO4^2-

• Na+

What is the charge of the ion formed by the element magnesium?

• 4-

• 1-

• 2+

• 3+

What group does the ion with a charge of -2 belong to?

• Alkali metals

• Halogens

• Anions

• Cations

How many electrons does a potassium ion lose or gain?

• lose 2

• gain 1

• lose 1

• gain 2

• gain 8

What is the charge of the ion formed by the element nitrogen?

• +2

• +3

• -3

• -1