Email
Chat with tutors
logo

Ask Questions, Get Answers

X
 
Answer
Comment
Share
Q)

Which of the following is NOT true about Cerium (Atomic Number = 58, Electron configuration = [Xe] 4f$^1$5d$^1$6s$^2$)?

(1) Cerium is quite electropositive and reacts slowly with cold water and quite quickly with hot water to form cerium hydroxide

(2) Cerium exhibits three oxidation states, +2, +3 and +4 but the +2 state is rare

(3) Cerium cannot be isolated and purified compared to other Lanthanides

(4) There are four isotopes of cerium that occur naturally

(5) Cerium metal reacts with all the halogens except I$_2$

$\begin {array} {1 1}(2) \;and \;(5) \\ (3)\;and (5) \\ (1)\;and\;(4) \\ (2)\;and \;(3) \end {array}$

1 Answer

Home Ask Tuition Questions
Your payment for is successful.
Continue
...