Concept explainers
Interpretation:
The lettered groups in the given table should be identified and two examples for each group should be provided.
Concept introduction:
Periodic Table: The available chemical elements are arranged considering their
In periodic table the horizontal rows are called periods and the vertical column are called group. There are seven periods and 18 groups present in the table and some of those groups are given special name as follows,
Atomic Number: Atomic number of the element is equal to the number of protons present in the nucleus of the element which is denoted by symbol Z. The superscript presents on the left side of the
- (1) Protons
- (2) Electrons
- (3) Neutrons
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