What are the 7 horizontal lines on a periodic table?

What are the 7 horizontal lines on a periodic table?

The elements are arranged in seven horizontal rows, called periods or series, and 18 vertical columns, called groups. Groups are labeled at the top of each column.

What do the 7 rows on the periodic table represent?

The table starts with the simplest atom, hydrogen, and then organizes the rest of the elements by atomic number, which is the number of protons each contains. The table has seven rows and 18 columns. Each row represents one period; the period number of an element indicates how many of its energy levels house electrons.

What are the horizontal rows in the periodic table?

period
A period is a horizontal row of the periodic table. There are seven periods in the periodic table, with each one beginning at the far left. A new period begins when a new principal energy level begins filling with electrons.

What are the 7 families of the periodic table?

These families are alkali metals, alkaline earth metals, transition metals, post-transition metals, metalloids, halogens, noble metals, and noble gases.

What are horizontal rows?

The horizontal rows are known as periods and vertical columns in the periodic table are known as groups.

What is vertical and horizontal in periodic table?

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.

What are the horizontal rows called?

The horizontal rows are called period and the vertical columns are called groups.

What are the 9 different families on the periodic table?

9 Element Families

• Alkali Metals: Group 1 (IA) – 1 valence electron.
• Alkaline Earth Metals: Group 2 (IIA) – 2 valence electrons.
• Transition Metals: Groups 3-12 – d and f block metals have 2 valence electrons.
• Boron Group or Earth Metals: Group 13 (IIIA) – 3 valence electrons.

How many rows are in the periodic table?

seven
The elements are arranged in seven horizontal rows, called periods or series, and 18 vertical columns, called groups.

How many horizontal rows are there?

Explanation: There are 7 horizontal rows in the modern periodic table. They are called periods. follow me !

How many horizontal rows in periodic table and what are they called?

seven horizontal rows
In the periodic table of elements, there are seven horizontal rows of elements. Each of these rows are called periods. The vertical columns of elements are called groups, or families. The most common way the periodic table is classified is by metals, nonmetals, and metalloids.

What is horizontal row?

The horizontal rows in a periodic table are called groups. These elements are arranged in rows and columns. There are 7 rows and 18 columns. We use a specific term for these rows and columns i.e. period and groups.