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प्रश्न
Explain the Atomic number with example.
उत्तर
- The number of protons present in the nucleus of an atom is called atomic number.
- It is denoted by Z.
- e.g., in `""_20^40Ca,` atomic number = 20
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संबंधित प्रश्न
Explain the Mass number with example.
What are the atomic numbers of elements whose outermost electrons is represented by 3s1.
Dalton said that ______ could not be divided.
The atom of an element is made up of 4 protons, 5 neutrons and 4 electrons. What is its atomic number and mass number?
WRITE SHORT ANSWER
Define the atomic mass number of an atom.
Fill in the blank of the following statement :
The total number of protons and neutrons in the nucleus of an atom is called its _________.
Fill in the Blank of the Following Statement :
An atom has atomic mass number 23 and atomic number 11. The atom has .................... electrons.
Draw the orbital diagram of `""_20^40"Ca"^(2+)` ion and state the number of three fundamental particles present in it.
The diagram represents an isotope of hydrogen [H]. Answer the following:
Atomic no. = 1
Mass no. = 1
If an isotope of ‘H’ has mass no. = 2, how many electrons does it have.
Compare the charge and mass of protons and electrons.
