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D And F Block Elements

JEE Main 2024 (Online) 27th January Evening Shift

INTEGER+4 / -12024

Total number of ions from the following with noble gas configuration is _________.

\(\mathrm{Sr}^{2+}(z=38), \mathrm{Cs}^{+}(z=55), \mathrm{La}^{2+}(z=57), \mathrm{Pb}^{2+}(z=82), \mathrm{Yb}^{2+}(z=70)\) and \(\mathrm{Fe}^{2+}(z=26)\)

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