What are some examples of net charges?

Answer 1

Try this local link.

Another example are simple alkoxides and alcohols. Take the simplest alcohol, methanol, #H_3COH#, versus its alkoxide salt, sodium methoxide, #H_3CO^(-)Na^(+)#.

Even though both molecules are neutral, the alkoxide should be written with a formal charge separation, where the sodium has a positive charge and the oxygen a negative charge.

Around sodium (#Z=11#) there are 10 electrons, so it bears a positive charge, but what about the oxygen? Oxygen has atomic number of 8; there are 2 inner core electrons. Around oxygen there are 3 lone pairs PLUS the oxygen atom has a share of 1 electron from the #C-O# bond. So the oxygen atom has 6 + 2 + 1 = 9 electrons. This is 1 negative charge in excess of the 8 positive charges in the oxygen nucleus. Oxygen (here) properly has a negative charge.

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Answer 2

Olivia Anton

Some examples of net charges include the charge of a proton (+1), the charge of an electron (-1), and the charge of a neutron (0).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.