GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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GENERAL SCIENCE Multiple Choice Which of the following elements is NOT a noble gas?
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W) Xenon
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X) Radon
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Y) Krypton
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Z) Bromine
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Explanation:
Detailed explanation-1: -So the definition of valence orbitals doesn’t depend on their quantum numbers, but on the energy required to fill them. That’s why zinc is not a noble gas-the 4p orbitals count as valence (reactive) orbitals for zinc even while the 4d don’t.
Detailed explanation-2: -Radium belongs to group 2 while noble gases belong to group 18 so radium is not a noble gas. Was this answer helpful?
Detailed explanation-3: -Group 8A (or VIIIA) of the periodic table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The name comes from the fact that these elements are virtually unreactive towards other elements or compounds.
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