Advertisements
Advertisements
Question
What is meant by saying that 'the atomic mass of oxygen is 16' ?
Advertisements
Solution
By saying that the atomic mass of oxygen is 16, we mean that the atom of oxygen is 16 times heavier compared to 1/12th the mass of a carbon-12 atom.
APPEARS IN
RELATED QUESTIONS
An element with mass number 81 contains 31.7% more neutrons as compared to protons. Assign the atomic symbol.
An ion with mass number 56 contains 3 units of positive charge and 30.4% more neutrons than electrons. Assign the symbol to this ion.
How many atoms are present in one gram atomic mass of a substance ?
Define gram atomic mass of a substance. How much is the gram atomic mass of oxygen ?
What is meant by atomic mass number?
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
Define the term:
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 element has electronic configuration 2, 8, 1 and 12 neutrons. Its mass no. is ________.
Which of the following represents 1 amu?
The sum of the numbers of protons and neutrons of an atom is called its ______
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.
Write the different types of isotopes of oxygen and their percentage abundance.
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?
What are the postulates of Bohr’s model of an atom?
