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Q. Difference between ion and radical.

Q. Difference between compound and molecule.

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Answer 1

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• Ions are electrically charged particles which are formed due to either gain and loss of one or more electrons by atom of an element.

• Ions can be positively charged as well as negatively charged.

• Ionic compounds are always stable due to the higher electrostatic force of attraction.

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• A radical is an atom or a group of atoms of the same or different elements that behave as a single unit with a net positive or negative charge.

• Radicals are related to ions but not similar to ions. Radicals can be electropositive as well as electronegative.

• Basic radicals are the positive ions whereas acid radicals are the negative ions.

• Compounds including certain radicals can lose little stability from them. We cannot sure ourselves that they are 100% stable.

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A particular compound always represents one molecule of that compound.

But, molecule is the smallest unit of a compound, which has an independent existence and can retain complete physical and chemical properties of the matter.

Take an example, Water (H2O).

It represents one molecule of water.

We should not confuse atoms and molecules with each other with respect to elements and compounds. Everytime, we should say "ATOMS of ELEMENTS" but "MOLECULES of COMPOUNDS".

However, the above information doesnt mean that a compound and a molecule are the same thing. A molecule is a particle of a compound. Moreover, two or more atoms join to form a molecule. And thus two hydrogen atoms join with one oxygen atom to form water, i.e., one molecule of water (H2O).

Answer 2

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Q.1 Difference between ion and radical.

Ans:-An ion is an atom or molecule that is positively or negatively charged due to the loss or gain of an electron.  In order for an atom to be neutral the number of electron orbiting the nucleus must match the number of protons in the nucleus.  If these don't match, then we have an ion.  So anytime an atom or molecule looses or gains an electron, and the number of electrons no longer match the number of protons, then it is an ion.  The result is this atom or molecule now carries a charge, whether it be positive or negative.

A radical is a molecule or atom that has at least one unpaired electron (one electron is in an orbit by itself), but this moelcule or atom does not carry a charge like an ion because the number of orbiting electrons still matches the number of protons in the nucleus.; however it is very reactive.

Elemental nitrogen has an atomic number of 7 with a mass of 14.0067.  Therefore, it has a proton number of 7 in the nucleus as determined by subtracting number of electrons from the mass number.  Because its number of electrons match the number of protons in its elemental state it cannot be an ion.

However, if we check it's shells we get 1S2, 2S2, 2P3.  Because there is at least one unpaired electron floating around now in the outermost shell it must be a radical.

Q2. Difference between compound and molecule.

Ans:-A compound is a type of molecule. A molecule is formed when two or more atoms of an element chemically join together. If the types of atoms are different from each other, a compound is formed. Not all molecules are compounds, because some molecules, such as hydrogen gasor ozone, consist only of one element or type of atom.

Molecule Examples

Some examples of molecules include:

Water: H2O

Oxygen: O2

Ozone: O3

Compound Examples

Some examples of compounds include:

Salt: NaCl

Water: H2O