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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
2 years, 9 months ago

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

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

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

Zinc forms \( [ Zn(NH_{3})_4]^{+2}\) Avineil Jain · 2 years, 9 months ago

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@Avineil Jain ELI5: What is a complex? Thomas Jones · 2 years, 9 months ago

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@Thomas Jones A complex is a coordination compound formed by ligands and a central metal atom. You can further study it on wiki Avineil Jain · 2 years, 9 months 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. Paramjit Singh · 2 years, 9 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 · 2 years, 9 months ago

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All metals can form complexes and Al can't so it's 2 Ðürvã Kølî · 2 years, 9 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 · 2 years, 9 months ago

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ANS:- 2 THIS IS THE ULTIMATE ANSWER AS I HAVE POSTED THIS. Ariijit Dey · 2 years, 8 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 · 2 years, 9 months ago

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I think its 2 Al(OH)³ Âbhïshëk Çôöl · 2 years, 9 months ago

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the answer is (2),AL(OH)3 Emmanuel Astorga · 2 years, 9 months ago

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a) Emanuel Farid · 2 years, 8 months ago

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a, Agcl is insoluble to ammonia, AgCl is a metallic salt. Joram Otero · 2 years, 8 months ago

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I thing (2) answer because other makes them complex. Atish Patel · 2 years, 8 months ago

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Agcl Bazmi Farooquee · 2 years, 8 months ago

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I think that ans is 2 bcoz all other are made from complexes Sufyan Dhansay · 2 years, 8 months ago

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4 Rohit Ketkar · 2 years, 8 months ago

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2 Sobia Khan · 2 years, 9 months 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 · 2 years, 9 months ago

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Al(oh)2 Prince Akhil · 2 years, 9 months ago

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according to me ans should be 1 all three have oh- ions Riddhesh Deshmukh · 2 years, 9 months ago

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Because all others are already in aqueous form as hydroxide is already there Preety Aggarwal · 2 years, 9 months ago

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The answer is AgCl Preety Aggarwal · 2 years, 9 months ago

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Option (2) Shreyas Patel · 2 years, 9 months ago

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The answer is 2 because all others can form complex Aliraza Lakhani · 2 years, 9 months ago

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The answer is 2, because it can't form complexes with Aluminium. Kevin Liyanto · 2 years, 9 months ago

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Its Al(OH)3 because it will form precipitation. Vivi Hinata · 2 years, 9 months ago

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2 is the answer Rahul Malik · 2 years, 9 months ago

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Aloh3 Darshan Mehta · 2 years, 9 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 · 2 years, 9 months ago

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Al(OH)3 Sruti Swaminathan · 2 years, 9 months ago

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2) Al(OH)3 is insoluble in aqueous ammonia Shashwat Sulekh · 2 years, 9 months ago

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I think it is 1st option Nikunj Pandharikar · 2 years, 9 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 · 2 years, 9 months ago

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Yaa its answer 2 Parag Soni · 2 years, 9 months ago

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Al(OH)3 Kshitij Bafna · 2 years, 9 months ago

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Answer is no. 2 Loslos Borja · 2 years, 9 months ago

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Ans is 2 Ravi Bagdia · 2 years, 9 months ago

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3 Niraj Ingole · 2 years, 9 months ago

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The answer is 2 because all others can form complexes Subhiksha Mukuntharaj · 2 years, 9 months ago

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Answer is 2 Aashish Gangwani · 2 years, 9 months ago

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twoooo.cause Al cant form complex ones. Krishna Deb · 2 years, 9 months ago

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answer is 2 Kads Phạm · 2 years, 9 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 · 2 years, 9 months ago

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The answer is 2 Dang Anh Tu · 2 years, 9 months ago

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1 Rahul Singh · 2 years, 9 months ago

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As told by Avineil Jain I was also thinking the that same concept Anubhav Sachan · 2 years, 9 months ago

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AgCl2 Gaurav Ghosh · 2 years, 9 months ago

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its 4th option Ahsan Jamali · 2 years, 9 months ago

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