______ and ______ are called inner transition elements.

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Lanthanides and Actinides are called inner transition elements.

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अध्याय 8: Periodic Classification of Elements - Evaluation [पृष्ठ १२२]

अध्याय 8 Periodic Classification of Elements
Evaluation | Q II. 8. | पृष्ठ १२२

In the modern Periodic Table, why does cobalt with higher atomic mass of 58.93 appear before nickel having lower atomic mass of 58.71?

Name the type of elements which have outermost shell complete.

How many periods and groups are there in the modern periodic table?

Compare Modern Periodic Law with Mendeleev's Periodic Law.

What are the periods in a periodic table?

Find the correlation:

Mendeleev’s periodic table : atomic mass : : Modern periodic table : _______

Find the odd one out and give its explanation.

Identify gas A in the following experiment.

An element which is an essential constituent of all organic compounds belongs to

An element has 2 electrons in its N shell.

Is it a metal or a non-metal?

and are called inner transition elements.