Which of the following statements is incorrec | vedclass

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

Question

(D) $1$. Sodium is the $6^{th}$ most abundant element in the Earth's crust,but it is not the most abundant metal (Aluminum is). Thus,statement $A$ is

Vedclass · Accepted Answer

The ionic character of alkali metal halides decreases down the group.

Vedclass · Answer

(D) $1$. Sodium is the $6^{th}$ most abundant element in the Earth's crust,but it is not the most abundant metal (Aluminum is). Thus,statement $A$ is correct.$2$. Sodium is indeed the most abundant metal in seawater (as $NaCl$). Thus,statement $B$ is correct.$3$. Melting points of alkali metals decrease down the group due to weaker metallic bonding as atomic size increases. Thus,statement $C$ is correct.$4$. According to Fajan's rule,as the size of the cation increases down the group,the polarizing power decreases,which increases the ionic character of the halides. Therefore,the ionic character increases down the group,making statement $D$ incorrect.

Which of the following statements is incorrect?

Similar Questions

The length $x$ of a rectangle is decreasing at the rate of $3 \text{ cm/min}$ and the width $y$ is increasing at the rate of $2 \text{ cm/min}$. When $x = 10 \text{ cm}$ and $y = 6 \text{ cm}$,find the rate of change of the perimeter.

The time taken by an object to slide down a $45^{\circ}$ rough inclined plane is $n$ times the time it takes to slide down a perfectly smooth $45^{\circ}$ inclined plane. The coefficient of kinetic friction between the object and the inclined plane is:

Consider the two following statements $A$ and $B$,and identify the correct choice given in the answers: $(A)$ Duddell's thermo galvanometer is suitable to measure direct current only. $(B)$ Thermopile can measure temperature differences of the order of $10^{-3} {}^{\circ}C$.

Which one of the following is employed as a tranquilizer drug?

The oxide,which cannot act as a reducing agent,is

Vedclass Test Series

Exam Paper Generator

Online Exam Module