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प्रश्न
Define the term ‘atomic number’ of an atom.
उत्तर
Atomic number is the number of protons in the atom of an element.
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संबंधित प्रश्न
Explain the Mass number with example.
From the symbol `""_15^31"P"`, state : atomic number of phosphorus
Name or state the following:
Elements having same mass number but different atomic number
State the main postulates of Dalton’s atomic theory.
Define the term ‘mass number’ of an atom.
Draw the atomic diagram of the following element showing the distribution of – protons, neutrons and the electrons in the various shell of the atom.
Argon – \[\ce{^40_18Ar}\]
[The upper number represent the – mass number and the lower number represent the – atomic number e.g. calcium – mass number = 40, atomic number = 20]
Differentiate between the following term:
Atomic number and mass number
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?
Give short answer:
what is the atomic mass number? mention its formula.
Explain the following terms.
- Proton
- Electron
- Neutron.
