# Can someone Help me in this Problem ? along with an explanation

Which one of the Following choices is correct , and why ??

Note by Ahmed Hassaneen
3 years, 10 months ago

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold
- bulleted- list
• bulleted
• list
1. numbered2. list
1. numbered
2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)example link
> This is a quote
This is a quote
    # I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
# I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
MathAppears as
Remember to wrap math in $$...$$ or $...$ to ensure proper formatting.
2 \times 3 $$2 \times 3$$
2^{34} $$2^{34}$$
a_{i-1} $$a_{i-1}$$
\frac{2}{3} $$\frac{2}{3}$$
\sqrt{2} $$\sqrt{2}$$
\sum_{i=1}^3 $$\sum_{i=1}^3$$
\sin \theta $$\sin \theta$$
\boxed{123} $$\boxed{123}$$

## Comments

Sort by:

Top Newest

According to me, the answer should be (2), as all the other metal cations form complexes.

Silver forms $$[ Ag(NH_{3})_2]^{+1}$$

Copper forms $$[ Cu(NH_{3})_4]^{+2}$$

Zinc forms $$[ Zn(NH_{3})_4]^{+2}$$

- 3 years, 10 months ago

Log in to reply

ELI5: What is a complex?

- 3 years, 10 months ago

Log in to reply

A complex is a coordination compound formed by ligands and a central metal atom. You can further study it on wiki

- 3 years, 10 months ago

Log in to reply

Usually such reactions involves complexation. Ammonia is a strong field ligand, it easily forms complexes with most metal cations, except a few like aluminium. The result follows.

- 3 years, 10 months ago

Log in to reply

when Al (OH)3 react with NH4OH it precipitates as the solubility of Al (OH)3 is less in NH4OH than in water

- 3 years, 10 months ago

Log in to reply

All metals can form complexes and Al can't so it's 2

- 3 years, 10 months ago

Log in to reply

I think the same, the answer is 2. Beacuse The reaction of alumunium with amonia cant form a complex, altough amonia is a good ligant. Because the reaction just form Al(OH)2, who have a low solubility in the more reagent. While the ions of the other metals, if they reacted with a little of ammonia, they'll precipitate to form Ag2O, Zn(OH)2, Cu(OH)2. But they are can soluble with more ammonia, which each form their complex compound, like avineil jain was told. Sorry i cant give my expalanation well, i have the bad english.

- 3 years, 10 months ago

Log in to reply

ANS:- 2 THIS IS THE ULTIMATE ANSWER AS I HAVE POSTED THIS.

- 3 years, 9 months ago

Log in to reply

Answer is 2 becoz 1 and 3 can form complex salts with aqueous ammonia and 4 is hydroxide of an amphoteric metal. So all that is left is 2

- 3 years, 10 months ago

Log in to reply

I think its 2 Al(OH)³

- 3 years, 10 months ago

Log in to reply

the answer is (2),AL(OH)3

- 3 years, 10 months ago

Log in to reply

a)

- 3 years, 9 months ago

Log in to reply

a, Agcl is insoluble to ammonia, AgCl is a metallic salt.

- 3 years, 9 months ago

Log in to reply

I thing (2) answer because other makes them complex.

- 3 years, 9 months ago

Log in to reply

Agcl

- 3 years, 9 months ago

Log in to reply

I think that ans is 2 bcoz all other are made from complexes

- 3 years, 9 months ago

Log in to reply

4

- 3 years, 9 months ago

Log in to reply

2

- 3 years, 9 months ago

Log in to reply

it is Al(OH)3 becoz it will not make complex compound with ammonia. other do as Ag(NH3)2Cl, Cu(NH3)4(OH)2,Zn(NH3)4(OH)2

- 3 years, 9 months ago

Log in to reply

Al(oh)2

- 3 years, 10 months ago

Log in to reply

according to me ans should be 1 all three have oh- ions

- 3 years, 10 months ago

Log in to reply

Because all others are already in aqueous form as hydroxide is already there

- 3 years, 10 months ago

Log in to reply

The answer is AgCl

- 3 years, 10 months ago

Log in to reply

Option (2)

- 3 years, 10 months ago

Log in to reply

The answer is 2 because all others can form complex

- 3 years, 10 months ago

Log in to reply

The answer is 2, because it can't form complexes with Aluminium.

- 3 years, 10 months ago

Log in to reply

Its Al(OH)3 because it will form precipitation.

- 3 years, 10 months ago

Log in to reply

2 is the answer

- 3 years, 10 months ago

Log in to reply

Aloh3

- 3 years, 10 months ago

Log in to reply

Al(OH)3 doesn't form a complex in ammonia, so it should be 2. The rest react with ammonia.

- 3 years, 10 months ago

Log in to reply

Al(OH)3

- 3 years, 10 months ago

Log in to reply

2) Al(OH)3 is insoluble in aqueous ammonia

- 3 years, 10 months ago

Log in to reply

I think it is 1st option

- 3 years, 10 months ago

Log in to reply

Al(OH)3 is insoluble, because aqueous ammonia creates the conditions for it to precipitate. At lower pH it will be dissolved as Al3+.6H2O, at higher pH it will be dissolved as Al(OH)6(3-).

- 3 years, 10 months ago

Log in to reply

Yaa its answer 2

- 3 years, 10 months ago

Log in to reply

Al(OH)3

- 3 years, 10 months ago

Log in to reply

Answer is no. 2

- 3 years, 10 months ago

Log in to reply

Ans is 2

- 3 years, 10 months ago

Log in to reply

3

- 3 years, 10 months ago

Log in to reply

The answer is 2 because all others can form complexes

- 3 years, 10 months ago

Log in to reply

Answer is 2

- 3 years, 10 months ago

Log in to reply

twoooo.cause Al cant form complex ones.

- 3 years, 10 months ago

Log in to reply

answer is 2

- 3 years, 10 months ago

Log in to reply

except aluminium all others are d- block elements. they can form complexes. p - block element Al cannot form

- 3 years, 10 months ago

Log in to reply

The answer is 2

- 3 years, 10 months ago

Log in to reply

1

- 3 years, 10 months ago

Log in to reply

As told by Avineil Jain I was also thinking the that same concept

- 3 years, 10 months ago

Log in to reply

AgCl2

- 3 years, 10 months ago

Log in to reply

its 4th option

- 3 years, 10 months ago

Log in to reply

×

Problem Loading...

Note Loading...

Set Loading...