Predicting Charge on Ions

Elements on the LEFT side of the periodic table will most likely form:

• Positive ions
• Negative ions
• Neutral Ions
• None of these

Tags

NGSS.HS-PS1-1

Most atoms have no net charge because they have....

• an equal number of charged and non-charged particles
• neutrons in their nuclei
• an equal number of electrons and protons
• an equal number of neutrons and protons

What group of elements satisfies the octet rule without forming compounds?

• halogen
• noble gas
• alkali metal
• alkaline-earth metal

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is an ion?

• An atom that has lost or gained protons
• An atom that has lost or gained neutrons
• An atom that has lost or gained electrons
• An atom with a charge of zero

Tags

NGSS.MS-PS1-5

What is an atom's oxidation number?

• The number of electrons gained or lost when forming an ion.
• The number of valence electrons.
• The number of protons and neutrons in the atom.
• The number of core electrons retained during the formation of an ion.

If an atom loses electrons when forming an ion, the charge will be:

• positive
• negative
• neutral

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

If an atom gains electrons when forming an ion, the charge will be:

• positive
• negative
• neutral

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

If an atom loses two valence electrons, what is its oxidation number?

• -1
• +1
• -2
• +2

What is the typical oxidation number of the Noble Gases?

• +2
• -3
• -1
• 0

If an atom loses electrons, what type of ion is formed?

• cation
• anion