All of the elements in a given horizontal row (or period) have the energy level, but they differ in the number of valence electrons.
The horizontal rows are periods on periodic table. There are 7 horizontal rows in modern periodic table.
The horizontal rows are called periods
rows. the vertical columns are called periods
The two names for horizontal rows on the periodic table are periods and series.
The horizontal rows are called periods, there are 7. The vertical rows are groups and there are 18.
The horizontal rows on the periodic table are called periods.
Typically, there are ten horizontal rows on a standard keyboard. This includes the top row (numbers and special characters), the second row (QWERTYUIOP), the third row (ASDFGHJKL), and the bottom row (ZXCVBNM).
The horizontal rows are periods on periodic table. There are 7 horizontal rows in modern periodic table.
The horizontal rows are called periods
Rows
rows. the vertical columns are called periods
Horizontal rows are called groups. Groups are formed according to the atomic number.
Rows are always horizontal, and columns are vertical. It's easier to remember when you think of rows of seats (like in a sports stadium) which are horizontal, and buildings have tall columns, which are vertical.
Rows are horizontal and columns are vertical.
The horizontal rows on the Periodic Table are called periods.
Rows.
The two names for horizontal rows on the periodic table are periods and series.