NURSING EXAM QUESTIONS
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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covalent bonds involve the valence electrons, whereas ionic bonds do not.
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Covalent bonds are extremely weak, whereas ionic bonds are extremely strong
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Covalent bonds involve electron sharing, whereas ionic bonds involve electron transfer.
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Covalent bonds consist of just two atoms, whereas ionic bonds consist of three or more ions.
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Detailed explanation-1: -Covalent bonds are formed due to sharing of electrons between two atoms in order to complete their octet, whereas ionic bonds are formed between atoms of metals and non-metals where the metal loses an electron to complete its octet and the non-metal gains that electron to complete its octet.
Detailed explanation-2: -Ionic bonds require at least one electron donor and one electron acceptor. In contrast, atoms with the same electronegativity share electrons in covalent bonds, because neither atom preferentially attracts or repels the shared electrons.
Detailed explanation-3: -Ionic bond involves a transfer of electrons whereas covalent bond involves sharing of electrons.
Detailed explanation-4: -Ionic and covalent bonds are responsible for the formation of molecules from atoms. In ionic bonding, the electrons from the outermost orbital are transferred from one atom to another. In covalent bonding, the electrons are shared by the two atoms.