the value of 2nd excitation energy of a single electron atom is X eV.find its ionisation energy
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about the fact that after the lockdown is over people are no longer taking precautions for the prevention of the spread of coronavirus variants write a letter to the editor of a daily expressing your concern as a responsible citizens and drawing the attention of concerned authority. give suitable suggestions as solution for the problemOxidation is a process in which a chemical substance changes because of the addition of oxygen. [technical] Carbon dioxide is a necessary result of the oxidation of carbon compounds. Quick word challenge.
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