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प्रश्न
Fill in the blanks.
Isotopes are the atoms of ______ element having the ______ atomic number but ______ mass number.
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उत्तर
Isotopes are the atoms of same element having the same atomic number but different mass number.
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संबंधित प्रश्न
What are the atomic numbers of elements whose outermost electrons is represented by 2p3.
The number of electrons in the atom of an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of an atom of this element ?
From the symbol `""_15^31"P"`, state :
(i) mass number of phosphorus,
(ii) atomic number of phosphorus, and
(iii) electron configuration of phosphorus.
Draw the orbital diagram of `""_20^40"Ca"^(2+)` ion and state the number of three fundamental particles present in it.
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element which can form trivalent ion
State the main postulates of Dalton’s atomic theory.
The diagram represents an isotope of hydrogen [H]. Answer the following:

Atomic no. = 1
Mass no. = 1
If an isotope of ‘H’ has mass no. = 2, how many electrons does it have.
The Atomic number of an element is 20. It has ______ valence electrons.
When an atom gives electrons from its outermost shell, it becomes ______ charged.
If an atom has 6 electrons in its outermost shell, it is inert.
