Positive and negative ions

Elements that are stable due to that their outermost energy level are completely filled with electrons

Elements whose atoms tend to lose their valence electrons to rearch the stable electron configuration of the nearest noble gas

Elements whose atoms tend to gain one or more electrons to rearch the stable electron configuration of the nearest noble gas

A metal atom that lost one or more electrons

A non metal atom that has gained one or more electrons

All of the following atoms can form ions, EXCEPT, _________

• ₁₇Cl

• ₁₃Al

• ₁₈Ar

• ₁₂Mg

Inert gases molecules are composed of __________

• one atom

• two different atoms

• two similar atoms

• three atoms

The electron configuration of the ₂₀Ca ion is similar to the electron configuration of the ______ion

• ₉F

• ₁₀Ne

• ₁₈Ar

• ₁₆S

The closest Nobel gas to the sodium cation ₁₁Na is ________

• ₁₈Ar

• ₁₂Mg

• ₁₀Ne

• ₉F

The number of energy levels in Sodium ion is _______the number of energy levels in its atom

• less than

• greater than

• equal