Question

In context with beryllium, which one of the following statements is incorrect? (1) It is rendered passive by nitric acid
(2) It forms Be₂C
(3) Its salts rarely hydrolyze (4) Its hydride is electron-deficient and polymeric

Answer 1

Answer:

As we learnt in

Anomalous behavious beryllium -

1) Due to small atomic and ionic size

2) High ionisation energy

3) No vacant d-orbitals

4) High hydration energy

-

 

 Due to small size and high hydration energy of Be3+ ion its salts are easily hydrolysed. 

 

Option 1)

It is rendered passive by nitric acid.

Incorrect

Option 2)

It forms Be2C.

Incorrect

Option 3)

Option 3)Its salts rarely hydrolyze.

Option 3)Its salts rarely hydrolyze.Correct

Option 4)

Its hydride is electron-deficient and polymeric.

Incorrect

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Answer 2

Explanation:

As we learnt in

Anomalous behavious beryllium -

1) Due to small atomic and ionic size

2) High ionisation energy

3) No vacant d-orbitals

4) High hydration energy

-

Due to small size and high hydration energy of Be3+ ion its salts are easily hydrolysed.

Option 1)

It is rendered passive by nitric acid.

Incorrect

Option 2)

It forms Be2C.

Incorrect

Option 3)

Its salts rarely hydrolyze.

Correct

Option 4)

Its hydride is electron-deficient and polymeric.

Incorrect

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