Question

3. How do atom exists in nature? Explain with examples.
4.Which type of charges are present on Inns? Give one example​

Answer 1

3 ans : Atoms exist in free states in the form of molecule.

Molecules may be formed by the combination of atoms of two or more different elements.

For example

• Molecule of water.

• It is formed by the combination of two atoms of hydrogen and one atom of oxygen.

4 ans : Gaining electrons makes the atom negatively charged, and losing electrons makes the atom positively charged.

Positive ions are called cations, and negative ions are called anions.

For example:

• lithium loses 1 electron to become Li+1.

• The +1 indicates the ion has a +1 charge.

Answer 2

Question 3:

Atoms exist in nature in three states :

• Independent atoms

• Molecules

• Ions

Independent atoms:

• They exist freely in nature as a single atom consisting of subatomic particles like electrons, protons and neutrons.

• Example: All the noble gases like Helium, Neon, Argon, etc.

Molecules:

• Two or more independent atoms come together closely and create bonds with each other to form molecules.

• Molecules can be diatomic, triatomic , etc.

• Examples : Oxygen molecule, Hydrogen molecule, etc.

Ions:

• Some atoms may release or gain electrons to form charged species known as ions.

• They can be cations and anions.

• Examples: Chloride ion, Calcium ion, etc.

Question 4:

There are mainly two types of charges present on ions:

• Positive charge or

• Negative charge

Example of positively charged ion is :

• Calcium ion (Ca+2) , Ferrous ion (Fe+2), etc.

Example of negatively charged ion is :

• Chloride ion (Cl-) , Fluoride ion (F-), etc.

Hope It Helps