(a) What is an ion? Explain with examples.
(b) What is the nature of charge on (i) a cation, and (ii) an anion?
(c) name the cation and anion present in MgCl2. Also, write their symbols.
(a) What is an ion? Explain with examples.
(b) What is the nature of charge on (i) a cation, and (ii) an anion?
(c) name the cation and anion present in MgCl2. Also, write their symbols.
Answer :
(a) An electrically-charged atom (or group of atoms) is called an ion. it is formed by the loss or gain of an electron by an atom.
Ions are of two types: cations and anions.
For example, A sodium ion (Na+ ) is formed when a sodium atom loses one electron. A sodium ion is a cation.
A chloride ion (Cl− ) is formed when a chlorine atom gains one electron. A chloride ion is an anion.
(b) (i) The charge on a cation is positive because it has negative charge
(ii) The charge on an anion is negative.
(c) The cation present in MgCl2 is a magnesium ion that is represented as Mg2+ and the anion present is a chloride ion that is represented by Cl−.
Answer :
(a) An electrically-charged atom (or group of atoms) is called an ion. it is formed by the loss or gain of an electron by an atom.
Ions are of two types: cations and anions.
For example, A sodium ion (Na+ ) is formed when a sodium atom loses one electron. A sodium ion is a cation.
A chloride ion (Cl− ) is formed when a chlorine atom gains one electron. A chloride ion is an anion.
(b) (i) The charge on a cation is positive because it has negative charge
(ii) The charge on an anion is negative.
(c) The cation present in MgCl2 is a magnesium ion that is represented as Mg2+ and the anion present is a chloride ion that is represented by Cl−.
