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Worksheet: Ions

Q1:

A hydride ion ( H ) loses two electrons to form X . What is the charge of X ?

  • A0
  • B 1
  • C 3
  • D1+
  • E 2

Q2:

Which of the following best describes an ion?

  • AOne of over 100 unique units which can participate in a chemical reaction
  • BA positively charged nucleus with bound electrons, which is neutral overall
  • CTwo or more chemical elements bonded together
  • DAn atom which has lost or gained electrons, gaining a net positive or negative charge
  • ETwo or more distinct substances mixed together but not chemically bonded

Q3:

An atom of oxygen gains two electrons to form an oxide ion. What is the charge of this oxide ion?

Q4:

How does an atom form a cation?

  • ABy losing protons
  • BBy gaining electrons
  • CBy gaining protons
  • DBy losing electrons

Q5:

How does an atom form an anion?

  • ABy gaining protons
  • BBy losing electrons
  • CBy losing protons
  • DBy gaining electrons

Q6:

An atom of magnesium loses two electrons to form a magnesium ion. What is the charge of this magnesium ion?