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प्रश्न
Draw the structure of an atom and explain the position of the sub-atomic particles.
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उत्तर
Structure of an atom.
Position of the subatomic – particles.
Atom consist of three sub-atomic.
Particles: 1. Protons, 2. Electrons, 3. Neutrons
- The nucleus of the atom contains the protons (positively charged) and the neutrons (no change)
- The outermost regions of the atom are called electron shells and contain the electrons (negatively charged)
- The protons have a positive charge while neutrons have a neutral charge.
- Electrons circle around the nucleus of an atom, they are negatively charged.
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?
Give two examples for each of ionic and covalent bond.
State Dalton’s atomic theory.
How did Neils Bohr visualise the atom ?
Fill in the blank
If an atom gains an electron, it is called an _______
Fill in the blank
An _______ is electrically neutral.
What is the usual symbol for (a) and electron (b) a proton, and (c) a neutron?
Fill in the following blanks with suitable words :
In water, the proportion of oxygen and hydrogen is .............. by mass.
State two observations which show that atom is not indivisible.
One nm is equal to :
The electron shell ______ is nearest to the nucleus.
What is the contribution of the following in atomic structure?
Maharshi Kanada
Select the correct answer to the statement given below:
Imaginary path around the nucleus of an atom in which electrons revolve.
Define the following term with an example.
Element
Define – Atom.
Name the sub-atomic particles.
______ is a substance that is made up of three oxygen atoms chemically combined.
The ______ are combination of atoms of various elements or the same element.
