Match the followingA Thermal stability order of hydrides 1 Na - K - Rb - Li - CsB Ionic nature of hydrides 2 Li - Na - K - Rb - CsC I-P 2 values order3 CsH - RbH - KH - NaH - LiHD Abundance decreasing order4 LiH - NaH - KH - RbH - CsHA- A-4- B-3- C-2- D-1B- A-1-B-2-C-3-D-4C- A -4- B -1- C -2- D -3D- A-1-B-4-C-3-D-2

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Reactivity with Dihydrogen (Group 1)

Match the fol...

Question

Match the following
A) Thermal stability order of hydrides 1) Na > K >Rb> Li > Cs
B) Ionic nature of hydrides 2) Li > Na > K >Rb> Cs
C) I.P₂ values order 3) CsH>RbH> KH >NaH>LiH
D) Abundance decreasing order 4) LiH>NaH> KH >RbH>CsH

A-4, B-3, C-2, D-1

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A-1,B-2,C-3,D-4

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A-4, B-1,C-2,D-3

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A-1,B-4,C-3,D-2

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Question 3

Metal hydrides are ionic, covalent or molecular in nature. Among LiH,NaH, KH,RbH,CsH, the correct order of increasing ionic charcter is

(a) LiH > NaH > CsH > KH > RbH

(b) LiH < NaH < KH < RbH < CsH

(d) NaH > CsH > RbH > LiH > KH

L i H, N a H, K H, R b H

C s H

\begin{matrix} Noble Gas & Usage A) Helium & 1) Treatment of cancer patients B) Neon & 2) Used in advertising sign lamps C) Radon & 3) Used in airport runway light D) Krypton & 4) Used as a coolant in nuclear reactors \end{matrix}

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The order of decreasing ionisation enthalpy in alkali metals is
(a) Na> Li > K> Rb (b) Rb< Na< K< Li
(c) Li > Na> K> Rb (d) K< Li < Na < Rb

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