Question

Which of the following characteristics was NOT included in Dmitri Mendeleev's periodic table?O distribution of elements determined by electron configurationO heavier elements placed in rows closer to the bottom of the tableO elements arranged by increasing atomic massO elements placed in columns based on chemical properties

Answer 1

Mendeleev's periodic table includes all the elements that were known at the time.

The rows of the table, were called periods and each period contained eight elements that increased in atomic mass from left to right.

The columns of the table, called groups, contained elements with similar properties.

The special this about this table was, the gaps for predicted elements were left.

In this question, we are given with four statements and are asked to determine, which of the following statement is not true regarding Dmitri Mendeleev's periodic table.

• distribution of elements determined by electron configuration
• heavier elements placed in rows closer to the bottom of the table
• elements arranged by increasing atomic mass
• elements placed in columns based on chemical properties

Out of these four options, option number 1 is correct as the statement distribution of elements determined by electron configuration is not true regarding Mendeleev's periodic table.

To know more about  Mendeleev's periodic table:

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