State whether the following statements are true or false :
(a) A sodium ion has positive charge because it has more protons than a neutral atom.
(b) A chloride ion has negative charge because it has more electrons than a neutral atom.
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Solution
(a) False. A sodium ion carries a positive charge because it has less number of electrons than a neutral atom.
(b) True. A chloride ion carries a negative charge because it has more electrons than a neutral atom.