Chemistry, Monday Exit Ticket, 1.14.19

An ion form when an element:

• gains or loses protons
• gains or loses electrons
• gains or loses neutrons
• gains or loses radiation

Electrons are always lost from:

• the shell closest to the nucleus
• the shell where the electrons have the least energy
• the outermost shell where electrons are present
• the excited state of the electrons

When atoms form ions, they have the same electron packing as:

• halogens
• chacogens
• transition metals
• inert or noble gases

When metals form ions:

• they lose electrons and form cations
• they gain electrons and form cations
• they lose electrons and form anions
• they gain electrons and form anions

When sodium forms an ion it:

• gains 1 electron
• gains 2 electrons
• loses 1 electron
• loses 2 electrons

When chlorine forms an ion it:

• gains 1 electron
• gains 2 electrons
• loses 1 electron
• loses 2 electrons

The charge on a sodium ion is:

• +2
• +1
• -1
• -2

The charge on a chlorine ion is:

• +2
• +1
• -1
• -2