Select the incorrect statement about lanthani | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) $1$. Lanthanides are elements from $Z = 57$ to $71$. $2$. All lanthanides are non-radioactive except Promethium $(Pm)$,which is radioactive. So,st

Vedclass · Accepted Answer

Lanthanum has $[Xe] 4f^1 6s^2$ configuration.

Vedclass · Answer

(D) $1$. Lanthanides are elements from $Z = 57$ to $71$. $2$. All lanthanides are non-radioactive except Promethium $(Pm)$,which is radioactive. So,statement $A$ is correct. $3$. All lanthanides have a $6s^2$ configuration in their outermost shell. So,statement $B$ is correct. $4$. The most common and stable oxidation state for all lanthanides is $+3$. So,statement $C$ is correct. $5$. Lanthanum $(La, Z = 57)$ has the electronic configuration $[Xe] 5d^1 6s^2$. It does not have any electrons in the $4f$ orbital. Therefore,the statement that Lanthanum has $[Xe] 4f^1 6s^2$ is incorrect.

Select the incorrect statement about lanthanides.

Similar Questions

Which of the following hydroxides is the most basic?

What is the electronic configuration of $Ce$ $(Z = 58)$?

Most common oxidation states of $Ce$ are

The $Eu^{2+}$ ion is a strong reducing agent in spite of its ground state electronic configuration (outermost) : [Atomic number of $Eu=63$]

From the list given below,the number of lanthanides which exhibit $+4$ oxidation state in their oxides is: $Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy$

Vedclass Test Series

Exam Paper Generator

Online Exam Module