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1. Give the configuration of the valence shell for germanium.

2. The energy needed to heat a 235 mL cup of water is 59.99 kJ. Using your microwave oven, how many moles of photons are needed to heat a 235 mL cup of water? Most microwave ovens emit microwaves that are absorbed by water at a wavelength of 12.24 cm.

3. At what velocity, in km, would an electron have to be moving to eject an electron from an atom of neon, which has a first ionization energy equal to 2080 kJ mol^-1? (The mass of an electron is 9.10938291 x 10³¹ kg)

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