How many elements are there in the modern periodic table?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 118
Since then, the periodic table has evolved to reflect over 150 years of scientific development and understanding in chemistry and physics.
- Today, with 118 known elements, it is widely regarded as one of the most significant achievements in science.
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Elements are arranged in order of increasing atomic number.
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Elements of the Periodic Table are denoted by a unique symbol and not its entire name, as some elements’ names can be long and complex.
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Elements are arranged vertically and horizontally. Elements arranged vertically in columns are called ‘Groups’ and elements arranged horizontally in rows are called ‘Periods’.
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Further elements are grouped as per periodic trends and properties. Example: Elements in group 1A are soft metals that react violently with water.