Argon (atomic mass=39.94) has been placed before potassium (atomic mass=39.10) in the periodic table.Why?
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elements in modern periodic table are placed according to their atomic number in increasing atomic number .
atomic number of Argon and potassium are 18 & 19 respectively. thus argon is kept before potassium.
atomic number of Argon and potassium are 18 & 19 respectively. thus argon is kept before potassium.
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In the modern periodic table, elements have been placed in order of their increasing atomic numbers. The atomic number of argon is 18 and that of potassium is 19.
Thus, argon has been placed before potassium.
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