Advertisements
Advertisements
प्रश्न
Define the following term:
Atom
Advertisements
उत्तर
An atom is the smallest particle of an element which retains its chemical identity in all physical and chemical changes.
संबंधित प्रश्न
If bromine atom is available in the form of, say, two isotopes `""_35^79Br (49.7%)" and """_35^81Br (50.3%)`, calculate the average atomic mass of bromine atom.
Write the names of `"Na"_3"PO"_4` compounds :
What does the word ‘atom’ mean?
State Dalton’s atomic theory.
An atom has 13 protons and 14 neutrons.
What is the atomic mass of the atom ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X?
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
Name the unit in which the radius of an atom is usually expressed.
For the symbols H, D and T, write the subatomic particles (protons, neutrons and electrons) found in each one of them.
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
Compare:
Chlorine atom and chloride ion, with respect to
Atomic structure
Electrical state
Draw the diagrams representing the atomic structures of the following: Neon
Select the correct answer to the statement given below:
Imaginary path around the nucleus of an atom in which electrons revolve.
Name the sub-atomic particles.
Which of the following statements made by Dalton has not undergone any change?
Define the term ions or radicals.
Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order
- Rutherford’s atomic model
- Thomson’s atomic model
- Bohr’s atomic model
The graphite refill used is pencil is made of element called ______.
The smallest unit of an element is ______.
An atom of Oxygen (O) and two atoms of hydrogen (H.) combine to form a molecule of ______.
