Unit 3.4: Atomic Structure for Ions

READ THE DIRECTIONS BEFORE STARTING THE ASSIGNMENT. Complete each of the following questions regarding ions using the format shown below. When asked for the complete chemical symbol, you will put the mass number over the atomic number with the symbol and charge as seen in the example below.

Ex. How many protons and electrons are present in O^-2?    p=8 e=10

Ex.Write the ion symbol for the ion with 3 protons and 2 electrons.   Li+1

Ex. How many protons neutrons and electrons are present in the following scandium ion 45/21Sc⁺³    p=21 n=24 e=18

Ex. Write the complete chemical symbol for an ion with 3 protons, 4 neutrons, and 2 electrons.   7/3 Li +1

Ex. What is the charge of an ion with p=7 n=7 e=10 ?   -3

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