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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 _________.
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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
What are the atomic numbers of elements whose outermost electrons is represented by 2p3.
Multiple Choice Questions
The sub atomic particle with negative charge is
State the mass number, the atomic number, number of neutrons and electronic configuration of the following atoms.
`""^12""_6C, ""^16""_8O, ""^19""_9F, ""^20""_10Ne, ""_13""Al""^27, ""_17""Cl""^35`
Also, draw atomic diagrams for them.
The atom of an element is made up of 4 protons, 5 neutrons and 4 electrons. What is its atomic number and mass number?
FILL IN THE BLANK
Rutherford won the Nobel Prize in 1908 for his investigations in the field of ......................
An element has an atomic number 12. How many electrons will be present in the K, L and M energy shells of its atom?
From the symbol `""_12^24"Mg"`
, state the mass number, the atomic number and electronic configuration of magnesium.
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?
Draw the atomic diagram of the following element showing the distribution of – protons, neutrons and the electrons in the various shell of the atom.
Phosphorus – \[\ce{^31_15P}\]
[The upper number represent the – mass number and the lower number represent the – atomic number e.g. calcium – mass number = 40, atomic number = 20]
If an atom has 6 electrons in its outermost shell, it is inert.
