Question

pleas give me ........

Answer 1

Answer:

1) An atom is the basic unit is an element. An atom is a form of matter which may not be further broken down using any chemical means. A typical atom consists of protons, neutrons, and electrons

Examples : Hydrogen, oxygen, uranium etc

Molecules are made up of atoms that are held together by chemical bonds. These bins form as a result of sharing or exchange of electrons among the atoms. The atoms of certain elements readily bond with other atoms to form molecules

Examples : Oxygen and chlorine

2) i) Angstroms

ii) 0.0000000010 m

iii) 9.91340182×${10}^{ - 12}$= 0.0099 Nano meters

iv) 0.1 Nano meter

3) Hydrogen, Helium, lithium, oxygen etc

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