Formation of Ions

Oxygen has six valence electrons. When forming an ion, oxygen will

• lose six electrons and have a charge of +6.

• lose six electrons and have a charge of -6.

• gain two electrons and have a charge is +2.

• gain two electrons and have a charge of -2.

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What kind of element forms cation after ionic bonding?

• metal

• metalloid

• noble gas

• non-metal

Why are ions formed from metal atoms positive?

• They have more electrons than protons

• They have more neutrons than protons

• They have an equal number of protons and electrons

• They have more protons than electrons

Potassium forms an ion of

• K⁺

• K^-

• P⁺

• P^-

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NGSS.MS-PS1-1

Sulfur forms an ion of

• S^-2

• S⁺²

• S²⁺

• S^2-

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What is the term given to an atom that carry a positive or negative charge?

• atom

• ion

• isotope

• molecule

Elements that belong to group IA in the periodic table of elements are most likely to

• gain an electron c. either gain or lose an electron

• lose an electron d. neither gain nor lose an electron

Which of the following is an anion?

• An atom that gained an electron.

• An atom that lost an electron.

• An atom that gained a proton.

• An atom that lost a proton

An atom lost an electron, which of the following group forms 1+ ion?

• Group 1

• group 2

• group 7

• group 8

Which atom is most likely to form a 3+ ion?

• C

• Al

• Ne

• Si

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NGSS.HS-PS1-1

NGSS.HS-PS1-2