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6 months ago

Chemistry Chemistry Classification of Elements and Periodicity in Properties

Identify the incorrect match

Name

IUPAC Official Name

Unnilbium

(i)

Nobelium

 

Unnilquadium

(ii)

Rutherfordium

 

Unnilseptium

(iii)

Bohrium

 

Unnilennium

(iv)

Dubnium

 

 

 

 

 
0 Follower 2 Views

A
alok kumar singh

Contributor-Level 10

Kindly go through the solution

Z=109 : Unnilennium->Meitnerium

New answer posted

6 months ago

Chemistry Chemistry Classification of Elements and Periodicity in Properties

An element with atomic number 50 belongs to
0 Follower 1 View

A
alok kumar singh

Contributor-Level 10

Sn = [Kr]4d105s25p2

Sn (Z = 50) belongs to p-block element.

New answer posted

6 months ago

Chemistry Class 11th

Oxidation number of S in H2SO5 is
0 Follower 3 Views

A
alok kumar singh

Contributor-Level 10

: x + 2 (+1) + 3 (–2) + 2 (–1) = 0 x = + 6.

New answer posted

6 months ago

Chemistry Equilibrium

Which of the following equilibrium will shift in forward direction on applying pressure?

 
0 Follower 2 Views

A
alok kumar singh

Contributor-Level 10

On increasing pressure, equilibrium moves in that direction where number of gaseous moles decreases.

New answer posted

6 months ago

Chemistry Equilibrium

The ionization constant of HCN is 4.5 * 10–10 at 298 K. Hydrolysis constant of sodium cyanide is
0 Follower 1 View

A
alok kumar singh

Contributor-Level 10

Kindly go through the solution

 

New answer posted

6 months ago

Chemistry Class 12th

Which of the following is not a characteristic of physisorption of a gas on solid surface?
0 Follower 1 View

A
alok kumar singh

Contributor-Level 10

In physisorption multimolecular layers are formed on solid surface.

New answer posted

6 months ago

Chemistry Chemistry Electrochemistry

The equilibrium constant for the reaction Zn(s) + Cu2+ (aq.) ->Cu(s) + Zn2+ (aq.), E° = 1.10 V at 298 K is
0 Follower 12 Views

A
alok kumar singh

Contributor-Level 10

Kindly go through the solution

 

New answer posted

6 months ago

Chemistry Class 12th

Emulsion is a collodial solution of 
0 Follower 1 View

A
alok kumar singh

Contributor-Level 10

Emulsion is a colloidal solution of liquid in liquid.

New answer posted

6 months ago

Chemistry Chemistry Electrochemistry

Which of the following aqueous solution will have the maximum specific conductance?
0 Follower 5 Views

A
alok kumar singh

Contributor-Level 10

More the number of ions in solution, more will be the specific conductance

is more than that of Ionic conductivity of H? Na+

New answer posted

6 months ago

Chemistry Chemistry Chemical Kinetics

For which order reaction, half-life is inversely proportional to the concentration of reactant?
0 Follower 1 View

A
alok kumar singh

Contributor-Level 10

Kindly go through the solution

 

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