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प्रश्न
Name or state the following:
Elements having same mass number but different atomic number
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उत्तर
4018Ar and 4020Ca
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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 | - |
(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?
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element which can form trivalent ion
State why the atomic weight of an element is also termed relative atomic mass.
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]
The atomic number of an element is 9, it has 10 neutrons. Find the element from the periodic table. What will be its mass number?
What are nucleons? How many nucleons are present in Phosphorous? Draw its structure.
Give short answer:
what is the atomic mass number? mention its formula.
______ = No. of protons = No. of the electrons.
Compare the charge and mass of protons and electrons.
