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प्रश्न
Explain the Mass number with example.
उत्तर
The mass number of an element is equal to the sum of the number of protons and the number of neutrons present in it.
Example: Number of protons in carbon = 6
Number of neutrons = 6
Hence mass number = Number of protons + Number of neutrons
= 6 + 6
= 12
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संबंधित प्रश्न
Fill in the blanks.
Isotopes are the atoms of ______ element having the ______ atomic number but ______ mass number.
Multiple Choice Questions
If the atomic number of an atom is 17 and mass number is 35 then number of neutron will be
State the mass number, the atomic number, number of neutrons and electronic configuration of the following atoms.
`""^12""_6C, ""^16""_8O, ""^19""_9F, ""^20""_10Ne, ""_13""Al""^27, ""_17""Cl""^35`
Also, draw atomic diagrams for them.
The diagram represents an isotope of hydrogen [H]. Answer the following:
Atomic no. = 1
Mass no. = 1
Do isotopes have the same atomic number or the same mass number?
What is a neutron?
‘A’ is denoted by ______.
Mass No =______ + No. of Neutrons.
If an atom has 6 electrons in its outermost shell, it is inert.
What is the relation between mass number & atomic number?
Compare the charge and mass of protons and electrons.
