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  • (a) Explain the formation of ionic compound,  with electron-dot structure : (Given : Atomic no. of Al and O are 13 and 8 respectively) (b) W

(a) Explain the formation of ionic compound, Al_{2}O_{3} with electron-dot structure :
(Given : Atomic no. of Al and O are 13 and 8 respectively)
(b) What happens when (Report only observations)
(i) a reactive metal reacts with a dilute mineral acid ?
(ii) an amphoteric oxide reacts with sodium hydroxide solution ?
(iii) a metal of low reactivity is dropped in the salt solution of a metal of high reactivity ?
(iv) a metal carbonate is treated with acid ?

 

 

 

 
 
 
 
 

Answers (1)

(a) Formation of ionic compound, Al_{2}O_{3} with electron-dot structure :
(Given : Atomic no. of Al and O are 13 and 8 respectively)


(b) 
(i) a reactive metal reacts with a dilute mineral acid -  Hydrogen gas is evolved

(ii) Salt and water are formed/Oxide gets dissolved

(iii) When a metal of low reactivity is dropped in the salt solution of a metal of high reactivity, no reaction is observed
(iv) When a metal carbonate is treated with acid, Brisk effervescence is observed 

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Safeer PP

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