Question

define elements n compounds ​

Answer 1

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• $\longmapsto$In chemistry and physics, an element is a substance that cannot be broken down into simpler components by any non-nuclear chemical reaction.

Now We'll Learn in more brief :

• $\longmapsto$ In chemistry and physics, an element is a substance that cannot be broken down into simpler components by any non-nuclear chemical reaction.

• $\longmapsto$An element is uniquely determined by the number of protons in the nuclei of its atoms. The number of protons in the nucleus of the atom of an element is known as the atomic number of that element.

• $\longmapsto$The number of electrons in the atom of a specific element can vary. If the number of electrons is the same as the number of protons, then the atom has no electric charge.

• $\longmapsto$ However, if the number of electrons is different from the number of protons, the atom is called an ion. If there are more electrons than protons, it is a negative ion; if there are fewer electrons than protons, it is a positive ion.

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Answer 2

Answer:

Element:

An element is a material that consists of a single type of atom. Each atom type contains the same number of protons.

Compound:

A compound consists of two or more types of elements held together by covalent or ionic bonds. Elements cannot be divided into smaller units without large amounts of energy.