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Chemistry, 06.09.2019 02:30 s0cial0bessi0n

2. what is a period?
3. what is the symbol for the following elements.
a. magnesium
b. potassium
c. iron
d. copper
4. what are the names of the following elements.
a. c
b. ci
d
sr

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Answers: 3

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2. what is a period?
3. what is the symbol for the following elements.
a. magnesium
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