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
5 years, 2 months ago

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

Silver forms [Ag(NH3)2]+1 [ Ag(NH_{3})_2]^{+1}

Copper forms [Cu(NH3)4]+2 [ Cu(NH_{3})_4]^{+2}

Zinc forms [Zn(NH3)4]+2 [ Zn(NH_{3})_4]^{+2}

Avineil Jain - 5 years, 2 months ago

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ELI5: What is a complex?

Thomas Jones - 5 years, 1 month ago

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

Avineil Jain - 5 years, 1 month ago

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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.

A Brilliant Member - 5 years, 2 months ago

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

Ðürvã Kølî - 5 years, 2 months ago

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

Dharma Teja - 5 years, 2 months ago

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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.

Ulsyah Almusyarofah - 5 years, 2 months ago

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

Emmanuel Astorga - 5 years, 2 months ago

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I think its 2 Al(OH)³

Âbhïshëk Çôöl - 5 years, 2 months ago

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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

Deep Mallik - 5 years, 2 months ago

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

Ariijit Dey - 5 years, 1 month ago

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

Anubhav Sachan - 5 years, 2 months ago

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1

rahul singh - 5 years, 2 months ago

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The answer is 2

Dang Anh Tu - 5 years, 2 months ago

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

Brahmam Meka - 5 years, 2 months ago

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answer is 2

Kads Phạm - 5 years, 2 months ago

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twoooo.cause Al cant form complex ones.

Krishna Deb - 5 years, 2 months ago

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Answer is 2

Aashish Gangwani - 5 years, 2 months ago

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The answer is 2 because all others can form complexes

Subhiksha Mukuntharaj - 5 years, 2 months ago

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3

niraj ingole - 5 years, 2 months ago

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Ans is 2

Ravi Bagdia - 5 years, 2 months ago

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Answer is no. 2

Loslos Borja - 5 years, 2 months ago

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Al(OH)3

kshitij bafna - 5 years, 2 months ago

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Yaa its answer 2

Parag Soni - 5 years, 2 months ago

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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-).

Fares Salem - 5 years, 2 months ago

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I think it is 1st option

nikunj pandharikar - 5 years, 2 months ago

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

Shashwat Sulekh - 5 years, 2 months ago

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Al(OH)3

Sruti Swaminathan - 5 years, 2 months ago

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

Yuxuan Seah - 5 years, 2 months ago

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Aloh3

Darshan Mehta - 5 years, 1 month ago

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2 is the answer

Rahul Malik - 5 years, 1 month ago

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

Vivi Hinata - 5 years, 1 month ago

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

Kevin Liyanto - 5 years, 1 month ago

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The answer is 2 because all others can form complex

Aliraza Lakhani - 5 years, 1 month ago

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Option (2)

Shreyas Patel - 5 years, 1 month ago

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The answer is AgCl

preety Aggarwal - 5 years, 1 month ago

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

preety Aggarwal - 5 years, 1 month ago

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

Riddhesh Deshmukh - 5 years, 1 month ago

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Al(oh)2

Prince Akhil - 5 years, 1 month ago

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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

MIT NARIA - 5 years, 1 month ago

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2

Sobia Khan - 5 years, 1 month ago

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4

Rohit Ketkar - 5 years, 1 month ago

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

Sufyan Dhansay - 5 years, 1 month ago

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Agcl

Bazmi Farooquee - 5 years, 1 month ago

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

Atish Patel - 5 years, 1 month ago

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

joram otero - 5 years, 1 month ago

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a)

Emanuel Farid - 5 years ago

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its 4th option

ahsan jamali - 5 years, 2 months ago

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AgCl2

Gaurav Ghosh - 5 years, 2 months ago

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