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

Question

The alkali metals form salt like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decreases in which of the following orders? (A) KH > NaH > LiH > CsH > RbH (B) NaH > LiH > KH > RbH > CsH (C) LiH > NaH > KH > RbH > CsH (D) CsH > RbH > KH > NaH > LiH

Tardigrade Admin · Accepted Answer

The tendency to form their hydrides, basic character and stability decreases from Li to Cs since the electropositive character decreases from Cs to Li

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

$KH > N a H > L i H > C sH > R b H$

$N a H > L i H > KH > R b H > C sH$

$L i H > N a H > KH > R b H > C sH$

$C sH > R b H > KH > N a H > L i H$

The tendency to form their hydrides, basic character and stability decreases from Li to Cs since the electropositive character decreases from Cs to Li

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

KH>NaH>LiH>CsH>RbH

NaH>LiH>KH>RbH>CsH

LiH>NaH>KH>RbH>CsH

CsH>RbH>KH>NaH>LiH

The tendency to form their hydrides, basic character and stability decreases from Li to Cs since the electropositive character decreases from Cs to Li

$KH > N a H > L i H > C sH > R b H$

$N a H > L i H > KH > R b H > C sH$

$L i H > N a H > KH > R b H > C sH$

$C sH > R b H > KH > N a H > L i H$