Match list I with list II and select the correct answer using the codes given below the lists `{:("List I", "List II"), ("Metal Ions", "Magnetic momen

Monjur Alahi

Match list I with list II and select the correct answer using the codes given below the lists
`{:("List I", "List II"), ("Metal Ions", "Magnetic moment (B,M)"),(A.Cr^(3+), 1. sqrt35),(B.Fe ^(2+), 2.sqrt30),(C. Ni^(2+), 3. sqrt24), (D. Mn^(2+), 4. sqrt15),(, 5.sqrt8):}`
A. `A-1, B-3, C-5 D-4`
B. `A-2, B-3, C-5, D-1`
C. `A-4, B-3, C-5, D-1`
D. `A-4, B-5, C-3, D-1`


0 like 0 dislike
1 views
Share with your friends

1 Answers

Salim Ahmed Kawsar

Call

Correct Answer - C
Magnetic moment, `musqrt(n(n+2))`
Where n = number of unpaired electrons
For `Cr^(3+)(3s^(2)3p^(6)3d^(3)),mu=sqrt(3(3+2))=sqrt15 B.M. `
For `Fe ^(2+)(3s^(2)3p^(6)3d^(6)), mu= sqrt(4(4+2))= sqrt24 B.M.`
For `Ni^(2+)(2s^(2)3p^(6)3d^(8)), mu =sqrt(2(2+2))=sqrt8 B.M.`
`Mn^(2+)(3x^(2)3p ^(6) 3d^(5), mu =sqrt(5(5+2)))= sqrt35B.M`

0 like 0 dislike
1 views
Talk Doctor Online in Bissoy App
Choose the correct option from the codes given below regarding elements and their characteristics colour given in column l and column II respectively

Correct Answer - C `{:("Element","Flame colour"),(A.Li " "to,1."Crimson red"),(B.Na" "to,2."Yellow"),(C.K" "to,3."Violet"),(D.Rb" "to,4."Red violet"):}`

2 Answers 2 views
Match the terms of column I with column II and choose the correct option from the codes given below. `{:("ColumnI","ColumnII"),(A."Sodium hydroxide",1

Correct Answer - A Correct matching can be represented as NaOH is known as caustic soda. NaCl is an important constituent of brine solution. Sodium bicarbonate is known as baking soda...

2 Answers 1 views
Match the following Columns and choose the correct option from codes given below. `{:(,"Column I",,"Column II"),(A.,"Chloroform mixed with nitrogen ge

Correct Answer - B `{:("Type of solution","Commone examples" ),("Chloroform mixed with nitrogen gas","Gaseous solution"),("Ethanol dissolved in water","Liquid solution"),("Amalgam of mercury with sodium","Solid solution"):}`

2 Answers 1 views
Match list I with list II and slect the correct anser using the codes below the lists. `{:("List I", "List II"),("Reactants", "Products"),((i)CH_(3)CH

Correct Answer - D the relatie order or reactivies of the alkyl halides is `3^(@) gt 2^(@)gt 1^(@)`. The most trans isomer dominates over cis isomer.

2 Answers 1 views
Match list (Molecules) with list II (Boiling points) and select the correct answer `{:("List I","List II"),((a)NH_3,"(1)290 K"),((b)PH_3,"(2)211 K"),(

Correct Answer - B `NH_3` due to hydrogen bonding has higher boiling point than `PH_3`. From `PH_3` to `BiH_3`, boiling point increases as the size of the central atom increases and...

2 Answers 1 views
Match List I (compound) with List II (use) and select the correct answer using the codes given below the lists `{:(" List I"," List II"),("I Acetyl sa

Correct Answer - A I (Acetyl salicylic acid)-b (Drug) II (D.D.T)-a (Insecticide) III (Naphthalene)-c (Moth repellent) IV (Carbon tetrachloride)-d (Fire extinguisher)

2 Answers 1 views
The magnetic moments of few transition metal ions are given below : `{:("Metal ion":,Sc^(3+),Cr^(2+),Ni^(2+),Ti^(3+)),("Megnetic moment (BM):",0.00,4.

(i) `Cr^(2+)` ion (`3d^(4)` configuration) has maximum number of unpaired electrons. (ii) `Sc^(3+)` ion ( Ar-configuration) forms colourless solution. (iii) `Sc^(3+)` ion (Ar-configuration) exhibits most stable +3 oxidation state. .

2 Answers 2 views
The questions given below consist of Assertion (A) and Reason (R ) . Use the following key to select the correct answer. Assertion : Tetrahedral compl

Correct Answer - a Reason is the correct answer for assertion .

2 Answers 1 views
The questions given below consist of Assertion (A) and Reason (R ) . Use the following key to select the correct answer. Assertion : The ligand `N_3^(

Correct Answer - d Correct assertion : The ligand `N_(3)^(-)` is named as azido . Correct reason : It is derived from `HN_3` .

2 Answers 1 views
The questions given below consist of Assertion (A) and Reason (R ) . Use the following key to select the correct answer. Assertion : `[Cu(NH_3)_4]^(2+

Correct Answer - d Correct assertion : `[Cu(NH_3)_4]^(2+)` is `dsp^(2) ` hybridised and square planar in nature. Correct reason : `[Cu(NH_3)_4]^(2+)` is paramagnetic in nature.

2 Answers 1 views
X