What may be method of stating the mass of atoms?

What will be the mass of these atoms?

Define mass number of an atom?

Which are the fundamental particles whose masses are mainly responsible for the mass of an atom?

What may be the stable oxidation-state of the transition element with the following d electron configurations. in the ground state of their atoms ': 3d^3,3d^5,3d^8 and 3d^4

Atoms have very very small mass and so usually the masses of atoms are given relative to a standard called atomic mass unit. What is Atomic Mass unit (AMU)?

Which would be larger: an atomic mass unit based on the current standard or one based on the mass of a Be-9 atom set at exactly 9 amu?

What are the frequency of a photon emitted during a transition from n = 5 state to the n = 2 state in the hydrogen atom?

a) What is the difference between atomic number and mass number. b) If the mass number of an element is 52 , and atomic number.is 24 , then how many neutrons will be there in the nucleus of its atom?

What do you understand from the statement that the atomic mass of Helium is 4?