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Q4: Lanthanum has two isotopes: La-138 and La-139.
Q10: What is the name of the following
Q22: Draw the line structure for 4-nonene.
Q59: The prefix which means seven is<br>A) hexa.<br>B)
Q71: The formula of iron(II) phosphate is<br>A) FePO<sub>4</sub>.<br>B)
Q78: Briefly describe the central role of chemistry
Q82: The label which indicates that a substance
Q135: Which is the electron dot structure of
Q146: A variable<br>A) does not change over the
Q152: The electrons in the outermost energy level