Question

Which one of the following are permagnetic a.ag+ b.fe3+ c.K+d.mg2+

Answer 1

Answer:paramagnetic are the compounds that get attracted towards magnetic field while that of diamagnetic are the compounds that repel in presence of magnetic field

Here iron is paramagnetic

Explanation:

Answer 2

Answer:

Among the following Fe³+ is paramagnetic.

Explanation:

• A compound is said to be paramagnetic when it has one or more unpaired electrons.If all the electrons are paired then it is said to be diamagnetic.
• Elemental Iron and Iron(III) are always paramagnetic because they have unpaired electrons.
• ag+ is diamagnetic. Ag has a single electron in it's outermost s orbital and completely filled d orbital. Ag+ one electron has to be removed from the outermost shell hence the s orbital becomes 0.Henne the d orbital becomes the outermost orbital and is completely filled with 10 electrons. As there is no unpaired electrons it is diamagnetic.
• Atomic number of potassium is 19.After losing one electron it's atomic number becomes 18.we know that the atomic number 18 belongs to Argon and is one of the noble gas belonging to the 18th group. we also know that all noble gases are diamagnetic. Hence K+ is diamagnetic.
• Mg has the atomic number 12.After losing two electrons it's atomic number becomes 10.The atomic number 10 belongs to Neon and is also a noble gas. it has completely filled 1s, 2s, 2p orbitals. Hence also being a noble gas it does not have any unpaired electrons and is also diamagnetic.
• Hence Fe³+ is paramagnetic.

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