What does the horizontal row in the periodic table represent?

Correct option is C

Correct Ans is (c)Periods

Sol.

• The horizontal rows in the periodic table are called Periods.
• Each period represents a new electron shell being filled with electrons as you move from left to right.
• There are 7 periods in the periodic table, each corresponding to the filling of a new electron shell.

Information Booster:

• Periods indicate the number of electron shells present in the atoms of elements.
• The properties of elements change progressively across a period.
• The first period contains only 2 elements (H and He), while the seventh period is the longest, containing 32 elements.
• As you move across a period, the atomic number increases, and the elements tend to become less metallic.
• The number of valence electrons increases as you move from left to right across a period.
• Periods help in determining the overall electron configuration of elements.

Additional Information:

 Periodic Table

• Atomic Number: Elements are arranged by increasing atomic number, which represents the number of protons in an atom's nucleus.
• Periods: There are 7 periods (horizontal rows). As you move from left to right across a period, elements become less metallic and more non-metallic.
• Groups: There are 18 groups (vertical columns). Elements in the same group share similar chemical properties due to having the same number of valence electrons.
• Blocks: The periodic table is divided into 4 blocks based on electron configuration:
• s-block: Groups 1 and 2.
• p-block: Groups 13-18.
• d-block: Transition metals (Groups 3-12).
• f-block: Lanthanides and Actinides.