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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 3p5?
Write true or false for the following statement
An atom on the whole has a positive charge.
Fill in the following blanks in respect of an atom of an element
| No. of protons | No. of neutron | Mass number | Atomic number | No. of electrons | Symbol |
| 11 | 12 | ___________ | ___________ | ___________ | ________ |
What is the significance of atomic numbers in the modern Periodic Table?
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.
Calcium – \[\ce{^40_20Ca}\]
[The upper number represent the – mass number and the lower number represent the – atomic number e.g. calcium – mass number = 40, atomic number = 20]
Differentiate mass number from atomic number.
What are nucleons? How many nucleons are present in Phosphorous? Draw its structure.
Give short answer:
what is the atomic mass number? mention its formula.
In a neutral atom number of protons is equal to the number of neutrons.
