Which of the Following Is Incorrect Concerning the 3d,4d,and 5d

question 126

Multiple Choice

Which of the following is incorrect concerning the 3d,4d,and 5d transition series?

• A)There is a significant increase in radius in going from the 3d to the 4d metals,but the 4d and 5d metals are similar in size.
• B)There is a general decrease in size going from left to right for each of these series due to the increasing nuclear charge.
• C)The separation of hafnium and zirconium found together in nature is difficult due to their similarities in chemistry,which is attributed to their virtually identical sizes.
• D)Cerium through lutetium exhibits what is referred to as the lanthanide contraction.
• E)All of the above are correct.

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