A lithium atom has positively charged protons and negatively charged electrons. The sum of the charges represents the charge of the lithium atom. How do you find the charge of the atom?

Answer 1

Yolu have answered your own question: the sum of the positive and negative charges gives the charge on the atom.

For the lithium atom, #Z=3#; there are 3 positive, nuclear charges. There are 3 extra-nuclear electronic charges, i.e. borne by the 3 electrons, in the neutral atom. Lithium generally loses one electron to form the #Li^+# cation.
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Answer 2

Since lithium has three protons and three electrons, the positive and negative charges cancel each other out, leaving the total charge of the atom at zero. The charge of an atom of lithium is defined as the balance between the positive and negative charges of its protons and electrons.

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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.

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.

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.

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.

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