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प्रश्न
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element with four shells
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उत्तर
Atomic number 19
Electronic configuration (19): 2,8,8,1
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संबंधित प्रश्न
Complete the following table.
| Atomic number | Mass number | Number of Neutrons | Number of protons | Number of electrons | Name of the Atomic species |
| 9 | - | 10 | - | - | - |
| 16 | 32 | - | - | - | Sulphur |
| - | 24 | - | 12 | - | - |
| - | 2 | - | 1 | - | - |
| - | 1 | 0 | 1 | 0 | - |
The atom of an element is made up of 4 protons, 5 neutrons and 4 electrons. What is its atomic number and mass number?
FILL IN THE BLANK
Atomic theory of matter was given by ..........................
Complete the following table.
| Atomic Number | Mass Number | Number of Neutrons | Number of Protons | Number of Electrons | Name of the Element |
| 9 | ______ | 10 | ______ | ______ | ______ |
| 16 | ______ | 16 | ______ | ______ | ______ |
| ______ | 24 | ______ | ______ | 12 | Magnesium |
| ______ | 2 | ______ | 1 | ______ | ______ |
| ______ | 1 | 0 | 1 | 1 | ______ |
Show diagrammatically the electron distributions in a sodium atom and a sodium ion and also give their atomic number.
When an atom gives electrons from its outermost shell, it becomes ______ charged.
‘Z’ is denoted by ______.
Electrons revolve around the nucleus in definite open shells.
In which one of the following, the number of protons is greater than the number of neutrons but number of protons is less than the number of electrons?
State the term for the following:
The amount of substance which contains the same number of units as the number of atoms in carbon-12.
