Advertisements
Advertisements
प्रश्न
Explain the following:
An element has atoms with different mass numbers.
Advertisements
उत्तर
Mass of an atom is contributed by mass of protons and mass of neutrons present inside the nucleus of an atom. Atoms of the same element contain the same number of protons but may differ in their number of neutrons. Therefore, an element has atoms with different mass numbers.
APPEARS IN
संबंधित प्रश्न
Define the atomic mass unit.
Define gram atomic mass of a substance. How much is the gram atomic mass of oxygen ?
Explain the need for a reference atom for atomic mass. Give some information about two reference atoms.
What are polyatomic ions? Give two examples.
Choose the correct answer from the option given below.
Modern atomic symbols are based on the method proposed by
The relative atomic mass of Cl atom is 35.5 a.m.u. Explain this statement.
Define the term:
Mass number
Name or state the following:
Atoms of the same element differing in mass number
Define the term of mass number.
Write down the mass number of the atom having 20 neutrons and 15 protons.
Select the correct answer from the answer in the bracket to complete the sentence.
An atom with electronic configuration 2, 7 and mass number 19 will have ________ neutrons.
Give a reason for the following:
The mass number of an atom is slightly less than the actual atomic mass.
Draw the structure of oxygen and sulphur atoms.
Which of the following represents 1 amu?
Relative atomic mass is otherwise known as ______.
The gram atomic mass of an element has no unit.
One electron is present in the outermost shell of the atom of an element X. What would be the nature and value of charge on the ion formed if this electron is removed from the outermost shell?
An atom having atomic mass number 13 has 7 neutrons. What is the atomic number of the atom?
The ratio of masses of H and O in H2O is ______.
