Rows in the periodic table are called _________ and columns are called __________

Elements in the same ____________ have _____________ properties

The expanded periodic table includes lanthanides and actinides in periods______ in between groups ___________

Which of the following is incorrect regarding chemical symbols?

Elements have an average atomic mass on the periodic table because

What conditions are necessary in order for elements to form?

When elements form:

When fusion occurs, atomic nuclei ___________ and ______________ a lot of energy

In the sun fusion most often occurs between isotopes of

Which of the following is incorrect regarding supernovas?

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