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प्रश्न
Fill in the following blanks :
| Atomic Number | Mass Number | Protons | Neutrons | Electrons | Symbol |
| 10 | 22 | _________ | _________ | _________ | _________ |
उत्तर
| ATOMIC NO. | MASS NO. | PROTONS | NEUTRONS | ELECTRONS | SYMBOL |
| 10 | 22 | 10 | 12 | 10 | Ne |
APPEARS IN
संबंधित प्रश्न
Dalton said that ______ could not be divided.
What is variable valency? Name two elements having variable valency and state their valencies.
Fill in the following blanks in respect of an atom of an element
| No. of protons | No. of neutron | Mass number | Atomic number | No. of electrons | Symbol |
| 11 | 12 | ___________ | ___________ | ___________ | ________ |
From the symbol `""_15^31"P"`, state :
(i) mass number of phosphorus,
(ii) atomic number of phosphorus, and
(iii) electron configuration of phosphorus.
What is the significance of atomic numbers in the modern Periodic Table?
Draw the atomic diagram of the following element showing the distribution of – protons, neutrons and the electrons in the various shell of the atom.
Oxygen – \[\ce{^16_8O}\]
[The upper number represent the – mass number and the lower number represent the – atomic number e.g. calcium – mass number = 40, atomic number = 20]
From the symbol \[\ce{^4_2He}\] for the element helium, write down the mass number and the atomic number of the element.
What is mass number of an atom?
Every atom has an equal number of protons and electrons. The nature of the atom is ______.
The No. of electrons in the outermost shell of the atom of an inert gas ______.
