The number of elements known in Mendeleev's presented periodic table is:

Question

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Answer 1

In Mendeleev’s periodic table, elements were placed based on the atomic mass, and chemical properties. During Mendeleev’s work, only 63 elements were found. After studying the properties of all elements, he found that the properties of elements were related to atomic mass.

Hence, correct option is C.

Answer 2

In Mendeleev’s periodic table, elements were placed based on the atomic mass, and chemical properties. During Mendeleev’s work, only 63 elements were found. After studying the properties of all elements, he found that the properties of elements were related to atomic mass.

Hence, correct option is C.

The number of elements known in Mendeleev's presented periodic table is:

$50$

$90$

$63$

$102$

Mark the group which has maximum number of element in Mendeleev's periodic table:

Who is father of the Periodic Table of Elements?

Number of short periods in Mendeleev's periodic table is :

Total number of groups in Mendeleev's table are:

Revise with Concepts

Dobereiner's Triads

Newlands' Law of Octaves

Lothar Meyer's Arrangement of Elements

Classification of Elements According to Mendeleev