6.1 Ion Formation

Why do elements form ions?

• To gain stability

• To lose energy

• To increase mass

• To change color.

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Elements form ions to achieve a stable electron configuration. Which of the following is a reason for this?

• To become heavier

• To become more reactive

• To achieve a full outer shell

• To change state.

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What is the main reason noble gas electron configurations are considered stable?

• They have a full outer shell of electrons.

• They have an odd number of electrons.

• They can easily lose electrons.

• They have a high number of protons.

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Ionic bonds form when atoms ​ (a)   or ​ (b)   electrons.

• share

• ignore

• create

• lose
• gain

What is a chemical bond?

• A force that holds atoms together

• A type of chemical reaction

• A form of energy

• A type of molecule.

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A cation is a type of ion that has a ______.

• positive charge

• negative charge

• neutral charge

• variable charge

Chemical bonds can form by the attraction between the positive nucleus of one atom and the _______ electrons of another atom.

Which of the following is especially helpful when used to illustrate the formation of chemical bonds?

• A) Electron-dot structures

• B) Ionization energy

• C) Electron affinity

• D) Atomic mass

Ionization energy refers the minimum energy required to​ ​ (a)   an electron.

• lose
• gain
• attract
• share

Which of the following elements show a general lack of chemical reactivity due to high ionization energies and low electron affinities?

• Alkali metals

• Noble gases

• Halogens

• Transition metals