What is the fraction of the mass of water due to neutrons?
The difference in the mass of 100 moles each of sodium atoms and sodium ions is 5.48002 g. Compute the mass of an electron.
Compute the difference in masses of 10³ moles each of magnesium atoms and magnesium ions. (Mass of an electron = 9.1×10⁻³¹ kg)
Compute the difference in masses of one mole each of aluminium atoms and one mole of its ions. (Mass of an electron is 9.1×10⁻²⁸ g). Which one is heavier?
Which of the following statement is always correct?
Identify the correct atomic structure of the Al³⁺ ion where n and p represent the number of neutrons and protons respectively.
© 2026 PadhAiPro. This question is provided for educational purposes.
