Advertisements
Advertisements
प्रश्न
State why the atomic weight of an element is also termed relative atomic mass.
Advertisements
उत्तर
- Atomic weight: Atomic weight is the mass of an atom, the number times it is heavier than an atom of hydrogen.
Since carbon atom is 12 times heavier than an atom of hydrogen. - Relative mass: Relative mass is equal to the number of times an atom of an element is heavier than 1/12 the mass of an atom of carbon.
Hence the atomic weight of an element is also termed relative atomic mass as it is in comparison with the mass of 1/12 the mass of a carbon atom.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
An ion which has a positive charge is called a ..................
TRUE \ FALSE
After the emission of a beta-particle, the atomic number of the atom increases by one.
An element has an atomic number 12. How many electrons will be present in the K, L and M energy shells of its atom?
An element A atomic number 7 mass numbers 14
B electronic configuration 2,8,8
C electrons 13, neutrons 14
D Protons 18 neutrons 22
E Electronic configuration 2,8,8,1
State Valency of each element
An element A atomic number 7 mass numbers 14
B electronic configuration 2,8,8
C electrons 13, neutrons 14
D Protons 18 neutrons 22
E Electronic configuration 2,8,8,1
State (i) Valency of each element (ii) which one is a metal (iii) which is non-metal (iv) which is an inert gas
What are orbits or shells of an atom?
If an atom ‘A’ has mass number 35 and atomic number 17, state the number of protons, electrons and neutrons it contains.
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.
Define the term of atomic number.
Compare the charge and mass of protons and electrons.
If M is the atomic mass and A is the mass number, then packing fraction is given by ______.
