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प्रश्न
Fill in the blank of the following statement :
The total number of protons and neutrons in the nucleus of an atom is called its _________.
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उत्तर
The total number of protons and neutrons in the nucleus of an atom is called its mass number.
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संबंधित प्रश्न
FILL IN THE BLANK
Atomic theory of matter was given by ..........................
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element with four shells
What are orbits or shells of an atom?
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?
Draw the structure of the following atoms showing the nucleus containing – protons, neutrons and the orbits with the respective electron:
Carbon [At. no. = 6, Mass no. = 12]
Define the term of atomic number.
The Atomic number of an element is 20. It has ______ valence electrons.
Mass No. 27 is for the element ______.
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?
Element ‘P' has electronic configuration 2,8,8,1. The number of chlorine atoms present in the chloride of ‘P’ is ______.
