Advertisements
Advertisements
प्रश्न
Name the three subatomic particles present in an atom.
Advertisements
उत्तर
The three subatomic particles present in an atom are: electron, proton and neutron.
APPEARS IN
संबंधित प्रश्न
MATCH THE COLUMNAS
| 1. Jpham Dalton | a. Neutrons |
| 2. Atom | b. Model of the atom |
| 3. Chadwick | c.The atomic theory of matter |
| 4. Rutherfrod | d. Positively charged |
| 5. Protons | e. Electricity neutral |
| 6. Nuclear fusion | f. Generator of electricity |
| 7.Gamma -rays | g. High penetrating power |
| h.Energy in sun |
WRITE SHORT ANSWER
What is radioactivity?
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
Write the names of the elements present in the following compound.
Common salt
How did Neils Bohr visualise the atom ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is such a particle called ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X?
How many times is a proton heavier than an electron?
One nm is equal to :
The electron shell ______ is nearest to the nucleus.
Draw the diagrams representing the atomic structures of the following: Neon
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will gain electron?
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form positive ion?
Define the following term with an example.
Non-metal
The volume occupied by 4.4 g of CO2 at S.T.P ______
Atoms of different elements having ______ mass numbers, but ______ atomic numbers are called isobars.
Write any two observations which support the fact that atoms are divisible.
An atom of Oxygen (O) and two atoms of hydrogen (H.) combine to form a molecule of ______.
What is the fundamental particle of an element?
