Advertisements
Advertisements
Question
Explain the following:
An element has atoms with different mass numbers.
Advertisements
Solution
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
RELATED QUESTIONS
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 is meant by atomic mass number?
Choose the correct answer from the option given below.
Modern atomic symbols are based on the method proposed by
Define the term:
Mass number
A hydrocarbon contains 4.8g of carbon per gram of hydrogen. Calculate the gram atom of each.
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.
Mass of 1 mole of Nitrogen atom is ______
The sum of the numbers of protons and neutrons of an atom is called its ______
The average atomic mass of hydrogen is ______ amu.
The gram atomic mass of an element has no unit.
Write the different types of isotopes of oxygen and their percentage abundance.
Calculate the % of oxygen in Al2(SO4)3. (Atomic mass: Al-27, O-16, S -32)
An atom having atomic mass number 13 has 7 neutrons. What is the atomic number of the atom?
Atoms are so tiny their mass number cannot be expressed in grams but expressed in ______.
The ratio of masses of H and O in H2O is ______.
