GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Isotope
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Atom
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Ion
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None of the above
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Detailed explanation-1: -Ions are single charged atoms (simple ions) or small charged “molecules” (polyatomic ions).” Simple ions include Na+, Ca2+, and Cl–. Polyatomic ions include (NH4)+, (CO3)2-, and OH–.
Detailed explanation-2: -Ions with a positive charge are called cations. Ions with a negative charge are called anions.
Detailed explanation-3: -An ionic charge is a positive or negative charge on an atom. The charge depends on the atom’s electron configuration and the number of valence electrons. On the periodic table, elements in the same group have the same number of valence electrons. So, their ionic charge is usually the same.
Detailed explanation-4: -Most atoms, however, can either gain or lose electrons; when they do so, the number of electrons becomes different from the number of protons in the nucleus. The resulting charged species is called an ion.
Detailed explanation-5: -Examples of ions are as follows: H+, Na+, Ca2+, F−, O2−