Worksheet: Ions

In this worksheet, we will practice writing and interpreting symbols of ions and calculate the ionic charges using protons and electrons.

Q1:

Which of the following does not readily form 2+?

  • AHg
  • BRb
  • CZn
  • DSn
  • EBa

Q2:

What is the charge of the cation in BaO?

  • A1
  • B2+
  • C4+
  • D2
  • E1+

Q3:

What is the charge of the cation in (NH)CO423?

  • A2
  • B4+
  • C1
  • D2+
  • E1+

Q4:

What is the charge of the anion in Sr(HPO)242?

  • A1+
  • B2
  • C1
  • D2+
  • E3

Q5:

What is the charge of the anion in NaO2?

  • A2+
  • B4
  • C1
  • D2
  • E1+

Q6:

Aluminum is in Group 13 of the periodic table. What is the charge of an aluminum ion?

  • A0
  • B13
  • C3+
  • D13+
  • E3

Q7:

Magnesium is in Group 2 of the Periodic Table. What is the charge of a magnesium ion?

  • A0
  • B2+
  • C2
  • D1+
  • E1

Q8:

Chlorine is in Group 17 of the Periodic Table. What is the charge of a chloride ion?

  • A17+
  • B1
  • C1+
  • D17
  • E0

Q9:

Fe2+ is one of the common ions of iron. An atom of iron loses three electrons to form the other common ion of iron. What is the charge of this ion?

  • A3
  • B6+
  • C3+
  • D5+
  • E

Q10:

Which of the following is a polyatomic ion?

  • AMg2+
  • BNO3
  • CSO2
  • DF
  • EO2

Q11:

Atoms of beryllium commonly lose two electrons when they react. What is the charge of the beryllium ion?

  • A0
  • B
  • C+
  • D2+
  • E2

Q12:

Sulfur can react to form an anion called the sulfide anion. What is the charge of the sulfide anion?

  • A2
  • B0
  • C
  • D+
  • E2+

Q13:

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

  • A3
  • B1
  • C0
  • D2
  • E1+

Q14:

Which of the following best describes an ion?

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

Q15:

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

  • A2+
  • B0
  • C1
  • D1+
  • E2

Q16:

How does an atom form a cation?

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

Q17:

How does an atom form an anion?

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

Q18:

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

  • A1+
  • B0
  • C2+
  • D1
  • E2

Q19:

An ion has an atomic number of 29, a mass number of 65, and a charge of 2+.

How many protons does the ion contain?

How many neutrons does the ion contain?

How many electrons does the ion contain?

What is the chemical symbol for this element?

  • ATb
  • BKr
  • CGa
  • DCu
  • ECo

Q20:

An ion has an atomic number of 50, a mass number of 116, and a charge of 4+.

How many protons does the ion contain?

How many neutrons does the ion contain?

How many electrons does the ion contain?

What is the chemical symbol for this element?

  • ADy
  • BPd
  • CXe
  • DSn
  • ELv

Q21:

An ion has an atomic number of 17, a mass number of 37, and a charge of 1.

How many protons does the ion contain?

How many neutrons does the ion contain?

How many electrons does the isotope contain?

What is the chemical symbol for this element?

  • AAr
  • BCl
  • CS
  • DRb
  • ECa

Q22:

How many occupied electron shells are present in a lithium atom?

Q23:

What is the most stable charge for an ion of lithium?

  • A+1
  • B+2
  • C1
  • D+3
  • E0

Q24:

Which of the following atoms can form both +1 and 1 ions?

  • AChlorine
  • BBromine
  • CLithium
  • DHydrogen
  • ESodium

Q25:

What is the difference between cations and anions?

  • ACations are positively charged, but anions are negatively charged.
  • BCations have more neutrons than anions.
  • CMetals can only form anions and nonmetals can only form cations.
  • DCations are negatively charged, but anions are positively charged.
  • ECations have gained electrons, but anions have lost electrons.

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