Advertisements
Advertisements
प्रश्न
Write down the mass number of the atom having 20 neutrons and 15 protons.
उत्तर
Mass number (A) = Neutrons (n) + Protons (p)
Mass number = 20 + 15 = 35
APPEARS IN
संबंधित प्रश्न
Define the atomic mass unit.
An element with mass number 81 contains 31.7% more neutrons as compared to protons. Assign the atomic symbol.
What is meant by Unified Atomic Mass?
What is meant by atomic mass number?
Define the following form:
Atomic mass number
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.
A hydrocarbon contains 4.8g of carbon per gram of hydrogen. Calculate the gram atom of each.
Explain the following:
An element has atoms with different mass numbers.
Ordinary chlorine gas has two isotopes \[\ce{^35_17Cl}\] and \[\ce{^37_17Cl}\] in the ratio of 3 : 1. Calculate the relative atomic mass of chlorine.
Which of the following has the smallest mass?
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.
What are the postulates of Bohr’s model of an atom?
Atoms are so tiny their mass number cannot be expressed in grams but expressed in ______.
