What information do you get from the following figures about the valency, atomic number and mass number of atoms X, Y and Z? Give your answer in a tabular form.
Helium atom has 2 electrons in its valence shell but its valency is not 2, Explain.
Which of the following correctly represent the electronic distribution in the Mg atom?
Identify the Mg²⁺ ion from the Fig.4.1 where, n and p represent the number of neutrons and protons respectively
The electron distribution in an aluminium atom is
Write down the electron distribution of chlorine atom. How many electrons are there in the L shell? (Atomic number of chlorine is 17).
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