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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 _________.
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
Which of the following are isoelectronic species i.e., those having the same number of electrons?
Na+, K+, Mg2+, Ca2+, S2–, Ar
Multiple Choice Questions
If the atomic number of an atom is 17 and mass number is 35 then number of neutron will be
Fill in the blanks- The number of protons in the nucleus of an atom is called its ....................
The mass number of an element is 18. It contains 7 electrons. What is the number of protons and neutrons in it? What is the atomic number of the element?
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element with four shells
Define the term ‘mass number’ of an atom.
The atomic number and the mass number of an element is 26 and 56 respectively. Calculate the number of electrons, protons and neutrons in its atom. Draw the structure.
Show diagrammatically the electron distributions in a sodium atom and a sodium ion and also give their atomic number.
The elementary particles such as protons and neutrons are collectively called ______.
What are the letters A, Z, and X stand for?
