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प्रश्न
Name or state the following:
Elements having same mass number but different atomic number
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उत्तर
4018Ar and 4020Ca
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संबंधित प्रश्न
Multiple Choice Questions
The sum of number of protons and number of neutrons present in the nucleus of an atom is called its
(a) What is meant by (i) atomic number, and (ii) mass number, of an element? Explain with the help of an example.
(b) What is the relation between the atomic number and mass number of an element?
(c) If an element M has mass number 24 and atomic number 12, how many neutrons does its atom contain?
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 : atomic number of phosphorus
Elements X, Y and Z have atomic numbers 6,9 and 12 respectively. Which one:
- Forms an anion
- Forms a cation
What is a neutron?
Mass No =______ + No. of Neutrons.
If an atom has 6 electrons in its outermost shell, it is inert.
If element M has mass number 24 and atomic number 12, how many neutrons does its atom contain?
Ca2+ has completely filled outer shell. Justify your answer.
