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प्रश्न
Give scientific reason.
Atomic mass number is a whole number.
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उत्तर
Atomic mass number is a whole number because it is the sum of numbers of protons and numbers of neutrons present in an atom. Which is present in the form of integers.
संबंधित प्रश्न
What is the maximum number of electrons an M shell of the atom can accommodate?
What is the maximum number of electrons that can go into the N shell of an atom?
Write the distribution of electrons in an atom of element whose atomic number is 18. What is special about the outermost electron shell (or valence shell) of the atom of this element?
Draw a neat labelled diagram.
Diagramatic sketch of electronic configurations of magnesium (Atomic number 12)
The atom of aluminium is represented by 27Al13. Write down the number of protons in the different orbits or shells in one atom of aluminium.
Explain the arrangement and distribution of electrons in the various shells with reference to an atom in general and to an atom of potassium ‘3919K’ with special reference to the 2n2 rule.
Explain the octet rule for the formation of –
Sodium chloride from a sodium atom and a chlorine atom.
Give a reason for the following:
The shells surrounding the nucleus of an atom are also called ‘energy levels’.
The electronic configuration of ‘Cl’ is ______.
How will you define the term ‘electronic configuration’?
