NURSING EXAM QUESTIONS
MICROBIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Ion
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Isotope
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Isopod
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None of the above
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Detailed explanation-1: -ion, any atom or group of atoms that bears one or more positive or negative electrical charges. Positively charged ions are called cations; negatively charged ions, anions.
Detailed explanation-2: -An ion is an atom or molecule which has lost or gained one or more electrons, and carries a net electric charge. If the result is an atom with more electrons than protons, the ion is negatively charged. If there are fewer electrons than protons the ion is positively charged.
Detailed explanation-3: -If it is positively charged or has a positive charge then it is called cation i.e, , etc. If it is negatively charged or has a negative charge then it is called an anion . i.e, , etc. Cations are formed when a neutral atom loses its one or two electrons.
Detailed explanation-4: -A monatomic ion (also called simple ion) is an ion consisting of exactly one atom. If, instead of being monatomic, an ion contains more than one atom, even if these are of the same element, it is called a polyatomic ion.