CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Ammonia

Ammonia is a ...

Question

Ammonia is a Lewis base. It forms complexes with cations. Which one of the following cations does not form complex with ammonia?

A

Ag

^{+}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

Cu

^{2 +}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

Cd

^{2 +}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

Pb

^{2 +}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is A Pb $^{2 +}$
Ammonia is a Lewis base. It forms complexes with cations of transition elements. $P b^{2 +}$ does not form a complex with ammonia as lead ( $P b$ ) is not a transition element. Lead ( $P b$ ) is a p - block element.

Hence option D is correct.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Ammonia is a Lewis base and it forms complexes with many cations. Which one of the following cations does not form a complex with ammonia?

Q. The cation that does not form an ammine complex with excess of ammonia is

Q. In the separation of

{C u}^{2 +}

{C d}^{2 +}

in 2nd group of qualitative analysis of cations tetrammine copper(II) sulphate and tetraammine cadmium(II) sulphate react with KCN to form the corresponding cyanide complexes, which one of the following pairs of the complexes and their relative stablities enables the separation of

{C u}^{2 +}

{C d}^{2 +}

?

Q. Most transition metals form multiple cations, that is, they have more than one possible amount of positive charge. Virtually all of the transition metals form dipositive

(2 +)

cations, along with one or more other forms. For example, titanium forms

T i^{2 +}

T i^{4 +}

, and cobalt forms

C o^{2 +}

C o^{3 +}

The principal exceptions to this predominance of cations with a

2^{+}

charge are scandium and yttrium, which form only tripositive cations,

S c^{3 +}

Y^{3 +}

, and copper and silver, which form cations with a single positive charge:

C u^{+}

A g^{+}

.
[While copper also forms dispositive

C u^{2 +}

, silver exhibits the single positive state essentially exclusively.]
Which of the following offers a possible explanation for the existence of

C u^{+}

A g^{+}

?

Q. Ammonia forms a complex ion

[C u (N H_{3})_{4}]^{2 +}

with copper ions in alkaline solutions but not in acidic solutions. What is the reason for it?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Hydrides of Nitrogen - Ammonia and Hydrazine

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon