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प्रश्न
What is meant by the 'atomic number of an element'?
उत्तर
An atomic number of an element is the number of protons in the nucleus of an atom.
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संबंधित प्रश्न
Explain the Atomic number with example.
Dalton said that ______ could not be divided.
Fill in the blanks.
Isotopes are the atoms of ______ element having the ______ atomic number but ______ mass number.
The mass number of an element is 23 and it contains 11 electrons. What is the number of protons and neutrons in it? What is the atomic number of the element?
If an atom ‘A’ has mass number 35 and atomic number 17, state the number of protons, electrons and neutrons it contains.
Draw the structure of the following atoms showing the nucleus containing – protons, neutrons and the orbits with the respective electron:
Carbon [At. no. = 6, Mass no. = 12]
Draw the structure of the following atoms showing the nucleus containing – protons, neutrons and the orbits with the respective electron:
Sodium [At. no. = 11, Mass no. = 23]
The particles that make up the atom are called ______ particles.
Name the 3 sub-atomic particles of an atom.
The Atomic number of an element is 20. It has ______ valence electrons.
