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10Atoms are electrically neutral because they have equal number of protons and electrons.
An ion is a neutral atom.
Positively charged ions are called cations.
Negatively charged ions are called anions.
Sodium ion is represented as Na⁺.
Chloride ion has a valency of 2.
Aluminium ion is represented as Al³⁺.
Hydrogen ion is H⁺.
An ion is formed by gaining or losing protons.
Oxide ion is negatively charged.
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When an atom loses electrons, it forms:
When an atom gains electrons, it forms:
Sodium ion is represented as:
Chloride ion has valency:
Aluminium ion has valency:
Which of the following is a negatively charged ion?
Hydrogen ion has charge:
Oxide ion has charge:
Cations are formed by:
Which of these is a divalent cation?
An atom becomes an ion by gaining or losing ______.
Positively charged ions are called ______.
Negatively charged ions are called ______.
Sodium forms a ______ ion represented as Na⁺.
Chloride is a negatively charged ion with valency ______.
______ ion is represented as Mg²⁺.
______ ion is represented as Al³⁺.
Oxide ion has a valency of ______.
______ ion is represented as K⁺.
______ ion is represented as NO₃⁻.