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What is the nuclear charge for a valence electron in cobalt ii
Accepted Answer
The nuclear charge for a valence electron in cobalt(II) is +27. Here's why:
Cobalt (Co) has an atomic number of 27, meaning it has 27 protons in its nucleus.
Nuclear Charge: The nuclear charge is the positive charge of the nucleus, which is equal to the number of protons.
Cobalt(II) ion: The roman numeral II in cobalt(II) indicates that the cobalt atom has lost two electrons to form a +2 cation.
Even though cobalt(II) has lost two electrons, the number of protons in the nucleus (and thus the nuclear charge) remains the same.
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