Define the following terms :1.Atom2.Molecule3.Radicals4.Valency 5.Per

1.	Define the following terms :1.Atom2.Molecule3.Radicals4.Valency 5.Periodic table
Answer» 1. Atom : An atom is the smallest indivisible unit of an OR Atom is the smallest unit of matter. 2. Molecule: Molecule is the smallest unit of a compound (or an element) which always has an independent existence. 3. Radicals: A radical is an atom of an element or a group of atoms of different elements that behaves as a single unit with a positive or negative charge on it. 4. Valency: It is the number of electrons donated or accepted by the valence shell of an atom during chemical combination. 5. Periodic table represents the tabular arrangement of elements in horizontal rows called periods and vertical columns called groups in order to classify the elements and their systematic study.

Define the following terms :1.Atom2.Molecule3.Radicals4.Valency 5.Periodic table

Answer»

1. Atom : An atom is the smallest indivisible unit of an

Atom is the smallest unit of matter.

2. Molecule: Molecule is the smallest unit of a compound (or an element) which always has an independent existence.

3. Radicals: A radical is an atom of an element or a group of atoms of different elements that behaves as a single unit with a positive or negative charge on it.

4. Valency: It is the number of electrons donated or accepted by the valence shell of an atom during chemical combination.

5. Periodic table represents the tabular arrangement of elements in horizontal rows called periods and vertical columns called groups in order to classify the elements and their systematic study.

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