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प्रश्न
Fill in the blanks- The number of protons in the nucleus of an atom is called its ....................
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उत्तर
The number of protons in the nucleus of an atom is called its atomic 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
What are the atomic numbers of elements whose outermost electrons is represented by 2p3.
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?
An atom of an element has two electrons in the M shell.
What is the (a) atomic number (b) number of protons in this element?
What is meant by the 'atomic number of an element'?
Draw the structure of the following atoms showing the nucleus containing – protons, neutrons and the orbits with the respective electron:
Silicon [At. no. = 14, Mass no. = 28]
Give short answer:
what is the atomic mass number? mention its formula.
The No. of electrons in the outermost shell of the atom of an inert gas ______.
If an atom has 6 electrons in its outermost shell, it is inert.
If M is the atomic mass and A is the mass number, then packing fraction is given by ______.
