Answer:
Rows on the periodic table represents a period, which is the number of energy levels or rings. It is the last shell which valence electrons are on.
For example the first row waas Hydrogen and Helium which each have one energy level.
The esecond row has Carbon and Oxygen which has two energy level.
The third row has Sodium which has three energy levels and so on.
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Just look at the name, it tells you the longest C chain. Ending with hexane means that the longest carbon chain is 6 C's long.
The nuclear emissions is listed in older of increasing charge are: Neutrons, positron, alpha particles.
D. When the Price change is negative for the day, an investor can assume the trading volume will decrease, is the answer I took the test and I got this question right!