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प्रश्न
Name or state the following:
Atoms of the same element differing in mass number
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उत्तर
Hydrogen: 11H, 21H, 31H
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संबंधित प्रश्न
Define the atomic mass unit.
A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the compound by weight.
Define gram atomic mass of a substance. How much is the gram atomic mass of oxygen ?
What is meant by saying that 'the atomic mass of oxygen is 16' ?
Explain the need for a reference atom for atomic mass. Give some information about two reference atoms.
What is meant by Unified Atomic Mass?
What is meant by atomic mass number?
Define the following form:
Atomic mass number
What are polyatomic ions? Give two examples.
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.
Mass of 1 mole of Nitrogen atom is ______
Which of the following represents 1 amu?
Noble gases are Diatomic.
The gram atomic mass of an element has no unit.
Answer the following question using the data given below:
- Assertion: The Relative Atomic mass of aluminium is 27
- Reason: An atom of aluminium is 27 times heavier than 1/12th of the mass of the C – 12 atom.
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If the atomic mass unit ‘u’ were defined to be `1/5 "th"` of the mass of an atom of C-12, what would be the atomic weight of nitrogen in amu or ‘u’ in this state? Atomic weight of N on the conventional scale is 14.
