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2
An atom of lithium has three protons and a nucleon number of 7.
How many electrons are in the lithium atom?.
a
b
How many neutrons does lithium have?
с
What is the mass number of this lithium atom?
d
Describe the lithium atom in the format that uses two numbers and the symbol for
the element....

Respuesta :

890243024

Answer:

Explanation:

If a lithium Li atom has 3 protons 3 electrons and 4 neutrons What is its atomic mass

A lithium atom contains 3 protons in its nucleus. Notice that because the lithium atom always has 3 protons, the atomic number for lithium is always Z = 3. The mass number, however, is A = 6 for the isotope with 3 neutrons, and A = 7 for the isotope with 4 neutrons.

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