GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What atom matches this electron configuration?[Xe] 6s25d9
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Mercury
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Gold
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Platinum
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Thallium
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Explanation:
Detailed explanation-1: -Barium has the noble gas configuration [Xe]6s². To work backwards and find the element with a given configuration, you first find the noble gas in the Periodic Table. Xe is element 54. Element 56 is barium, Ba.
Detailed explanation-2: -The atomic number is 28. If we check the periodic table, we see that the atom with an atomic number of 28 is nickel (Ni). Hence, option b is the correct choice.
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