Simplify this expression 1-c+4c-29
1 answer:
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Explanation:
Just a few things to remember:
- # of neutrons = Mass number - # protons
- Mass number = # protons + # neutrons
- Atomic Number = # of protons
- # of electrons = # of protons - charge on the atom
- Symbol - use the atomic number to find the element in the periodic table
