In terms of electronic configuration, what do the elements of a given period and a group have in common?

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Chandan Asked Sep 14, 2023

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Elements A and B combine to form three different compounds.

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Cu-63 isotope is 69.09% and Cu-65, 30.91% in a copper atom. If the mass of ${ }^{63} Cu$ isotope is 62.9298 amu, what must be the mass of ${ }^{63} Cu$ isotope given that atomic mass of copper is 63.546 amu?

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In terms of electronic configuration, what do the elements of a given period and a group have in common?

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