Question

what is representative elements?? ​

Answer 1

Explanation:

In chemistry and atomic physics, the main group is the group of elements whose lightest members are represented by helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, and fluorine as arranged in the periodic table of the elements. The main group includes the elements in groups 1 and 2, and groups 13 to 18. Wikipedia

Answer 2

Answer:

The Groups of periodic table can divided into the two categories.

Representative Elements

Transition Metals.

First two and last six groups of periodic table together are representative elements. Transition metals falls in the middle of periodic table.

Elements in the group exhibit similar chemical behaviour. The similarity is because of two factors:

Same number of electrons in outermost orbital

Same distribution of electron in their outermost orbitals.

We can classify the all the elements into 4 blocks: s-block, p-block, d-block and f-block. This classification is based on type of atomic orbitals filled with electrons.

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