The arrangement of elements in the Modern Periodic Table is based on t...
Arrangement of elements in the Modern Periodic Table:
The Modern Periodic Table is arranged based on the increasing atomic number in the horizontal rows. Let's break down this concept further:
Atomic Number:
- The atomic number of an element is the number of protons in the nucleus of an atom. It uniquely identifies an element.
- In the Modern Periodic Table, elements are arranged in order of increasing atomic number from left to right in each period (horizontal row).
Horizontal Rows (Periods):
- The horizontal rows in the Periodic Table are called periods.
- As you move from left to right across a period, the atomic number of the elements increases by one.
Significance:
- The arrangement of elements based on increasing atomic number helps in organizing elements with similar chemical properties in the same vertical columns (groups).
- This arrangement also helps in predicting the properties of elements and their compounds.
Example:
- For example, in Period 2, the elements Lithium (Li), Beryllium (Be), Boron (B), Carbon (C), Nitrogen (N), Oxygen (O), Fluorine (F), and Neon (Ne) are arranged in increasing atomic number.
In conclusion, the Modern Periodic Table is structured in a way that elements are organized based on their increasing atomic number in the horizontal rows (periods). This arrangement helps in understanding the periodic trends and properties of elements.
The arrangement of elements in the Modern Periodic Table is based on t...
The elements are listed in ascending order of atomic numbers, with heavier elements at the top of the list. The horizontal rows of the periodic table are referred to as Periods, and the vertical columns of the periodic table are referred to as Groups. The elements in the Modern Periodic Table are divided into seven Periods and eighteen Groups, as shown in the diagram below. The chemical elements are arranged from left to right and top to bottom in order of increasing atomic number, or the number of protons in an atom’s nucleus, which generally corresponds to increasing atomic mass. The elements are arranged from left to right and top to bottom in order of increasing atomic mass.
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.