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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
Fill in the blank
An ion which has a positive charge is called a ..................
What is variable valency? Name two elements having variable valency and state their valencies.
TRUE \ FALSE
After the emission of a beta-particle, the atomic number of the atom increases by one.
Name or state the following:
Elements having same mass number but different atomic number
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
Which sub-atomic particles in the 3 isotopes of ‘H’ are the same.
‘Z’ is denoted by ______.
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.
Element ‘P' has electronic configuration 2,8,8,1. The number of chlorine atoms present in the chloride of ‘P’ is ______.
