SCIENCE
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
What atom matches this electron configuration?[Xe] 6s25d9
|
|
Mercury
|
|
|
Gold
|
|
|
Platinum
|
|
|
Thallium
|
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: -A chemical element is found at row 5, column 7 on the periodic table, discovered in 1811. It has an atomic mass of 126.9 and a proton number of 53. Therefore the atom of iodine has 53 electrons in the follwing configuration-1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p5 (Kr 4d10 5s2 5p5).
There is 1 question to complete.