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प्रश्न
Multiple Choice Questions
The sub atomic particle with negative charge is
विकल्प
proton
neutron
electron
nucleon
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उत्तर
electron
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संबंधित प्रश्न
Fill in the blanks.
Isotopes are the atoms of ______ element having the ______ atomic number but ______ mass number.
FILL IN THE BLANK
Atomic theory of matter was given by ..........................
TRUE \ FALSE
After the emission of a beta-particle, the atomic number of the atom increases by one.
Name the particles which actually determine the mass of an atom.
(a) Which of the nuclear particles is present in the same fixed number in the atoms of any particular element?
(b) What do we call this number which is characteristic of a particular element?
Give reason
Actual atomic mass is greater than mass number.
Draw the structure of the following atoms showing the nucleus containing – protons, neutrons and the orbits with the respective electron:
Silicon [At. no. = 14, Mass no. = 28]
Define the term of atomic number.
Mass No =______ + No. of Neutrons.
Match the following:
| Column A | Column B | ||
| 1. | K shell | a. | 8 |
| 2. | L shell | b. | 32 |
| 3. | M shell | c. | 2 |
| 4. | N shell | d. | 18 |
