PS 6.1 Notes

Dropdown

A SODIUM atom needs to

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one electron to have a full outer energy level.

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Multiple Choice

What is the formula for magnesium chloride?

• MgCl

• Mg₂Cl

• MgCl₂

• Mg₂Cl₂

Multiple Choice

When is an atom stable?

• when its electrons are evenly distributed through its energy levels.

• when its lowest occupied energy level is filled with electrons

• when its highest unoccupied energy level is filled with electrons

• when its highest occupied energy level is filled with electrons.

Multiple Choice

Which description applies to an element with two valence electrons?

• nonreactive metal

• nonreactive nonmetal

• reactive metal

• reactive nonmetal

Multiple Choice

How do sodium (Na) and chlorine (Cl) both achieve stable electron configurations when they react to form sodium chloride (NaCl)?

• an electron is transferred from the sodium atom to the chlorine atom

• an electron is transferred from the chlorine atom to the sodium atom

• both atoms gain one electron

• both atoms lose one electron