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.
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.
An ion with mass number 37 possesses one unit of negative charge. If the ion contains 11.1% more neutrons than the electrons, find the symbol of the ion.
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.
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' ?
Define atomic mass unit.
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
Which of the following represents 1 amu?
The sum of the numbers of protons and neutrons of an atom is called its ______
Relative atomic mass is otherwise known as ______.
The average atomic mass of hydrogen is ______ amu.
Write the different types of isotopes of oxygen and their percentage abundance.
Calculate the % relative abundance of B-10 and B-11, if its average atomic mass is 10.804 amu.
Chlorine exists in two isotopic forms, \[\ce{Cl-37}\] and \[\ce{Cl-35}\] but its atomic mass is 35.5. This indicates the ratio of \[\ce{Cl-37}\] and \[\ce{Cl-35}\] is approximately
