The alkali metals form salt-like hydrides by | vedclass

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

Question

(B) The thermal stability of ionic hydrides depends on the lattice energy and the strength of the metal-hydrogen bond. As the size of the alkali metal

Vedclass · Accepted Answer

$LiH > NaH > KH > RbH > CsH$

Vedclass · Answer

(B) The thermal stability of ionic hydrides depends on the lattice energy and the strength of the metal-hydrogen bond. As the size of the alkali metal cation increases down the group $(Li^+ Consequently,the thermal stability of these hydrides decreases as the size of the cation increases. Therefore,the correct order of thermal stability is $LiH > NaH > KH > RbH > CsH$.

The alkali metals form salt-like hydrides by direct synthesis at elevated temperatures. The thermal stability of these hydrides decreases in which of the following orders?

Similar Questions

The compound formed on heating sodium metal in a current of dry ammonia gas is

$A$ substance $X$ is a compound of an element of group $IA$. The substance $X$ gives a violet colour in flame test. $X$ is

Which of the following elements has the highest reaction rate with water?

Give two uses of $NaCl$.

Which of the following is basic in nature?

Vedclass Test Series

Exam Paper Generator

Online Exam Module