A period on the periodic table is a horizontal row. The atoms in this row show a trend in their width, and in the amount of work needed to make them an ion, among the fe â¦ w other similarities.
The x-axis and y-axis Remembered! The x-axis and y-axis are two lines that create the coordinate plane. The x-axis is a horizontal line and the y-axis is a vertical line. I'm sure you've heard that a million times, but it might hard for you to remember which one is which. Here is a little trick to help you remember...
In a Cartesian coordinate system, the y-axis sits at a 90-degree angle from the x-axis. The two axes meet at a point where the numerical value of each is equal to zero. On a map of the world, this is analogous to the point where the equator is crossed by the prime meridian. Continue Reading.