BIOCHEMISTRY
PH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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+1
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+2
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-1
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-2
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Detailed explanation-1: -For example, a neutral calcium atom, with 20 protons and 20 electrons, readily loses two electrons. This results in a cation with 20 protons, 18 electrons, and a 2+ charge.
Detailed explanation-2: -A calcium ion has a net ionic charge of + 2. This +2 charge is a representation of the relationship between the number of protons in calcium (18) and the number of electrons once it has reached its most stable form. Sodium will lose its two valence electrons to another atom to make its most stable form.
Detailed explanation-3: -Ca2+ represents an ion with 20 protons and 18 electrons. A calcium atom has 20 protons and 20 electrons. The 2+ charge next to the symbol indicates a loss of two electrons: 20-2=18.
Detailed explanation-4: -The calcium ion is also known as Ca2+, meaning it has two less electrons than protons and is not stable in nature.
Detailed explanation-5: -Ca is an alkanline earth metals for which most stable oxidation state is +2. Hence, it will form Ca2+ ion.