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प्रश्न
Define the term of atomic number.
What is meant by the term atomic number
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उत्तर
Atomic number [Z]: “Is the number of protons in the nucleus of an atom.”
OR “Is the number of positive charges in the nucleus of its atom.”
OR “Is the number of electrons in the complete atom.”
Z = P = e
संबंधित प्रश्न
Multiple Choice Questions
If the atomic number of an atom is 17 and mass number is 35 then number of neutron will be
WRITE SHORT ANSWER
Define the atomic mass number of an atom.
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?
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element with four shells
Elements X, Y and Z have atomic numbers 6,9 and 12 respectively. Which one:
- Forms an anion
- Forms a cation
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.
Differentiate between the following term:
Atomic number and mass number
What are nucleons? How many nucleons are present in Phosphorous? Draw its structure.
A ______ number describes a specific aspect of an electron.
If M is the atomic mass and A is the mass number, then packing fraction is given by ______.
