Why beryllium is not attacked by an acid easily??

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Solution

The oxides and hydroxides of both Be and Al are amphoteric and dissolve in sodium hydroxide as well as in hydrochloric acid. Like Al, Be is not readily attacked by acids because of the presence of an oxide film.

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Choose the correct statements from the following . ?
(a) Beryllium is not readily attacked by acids because of the presence of an oxide film on the surface of the metal
(b) beryllium stable is readily soluble in water as the greater hydration enthalpy of $B e 2 +$ very the lattice enthalpy factor
(c) Beryllium exhibits coordination number more than four
(d) Beryllium oxide is purely acidic in nature

Which one of the following compounds will be most easily attacked by an electrophile?

Be is not readily attacked by acids because:

Q. Assertion :Alkenes are easily attacked by electrophilic reagents. Reason: Alkenes are unstable molecules in comparison to alkanes.

Which of the following statement is true regarding esterification of a carboxylic with an alcohol ?

(i) It is carried out in presence of a strong acid which acts as a catalyst.

(ii) The strong acid makes the carbonyl carbon more electrophilic, and hence causes the alcohol, a strong nucleophile to attack on the carbonyl carbon.

(iii) The strong acid makes the carbonyl group more electrophilic which is thus attacked easily by an alcohol. a weak nucleophile.

(iv) Esterification can be done even in absence of a strong, acid.

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