
The correct order of values with a negative sign for the four successive elements , , and is-
A.
B.
C.
D.
Answer
424.5k+ views
1 likes
Hint: Standard electrode potential is a measurement of the potential for equilibrium. There is a potential difference between the electrode and the electrolyte called the potential of the electrode. When unity is the concentration of all the species involved in a semi-cell, the electrode potential is known as the standard electrode potential. Under standard conditions, the standard electrode potential occurs in an electrochemical cell, say the temperature = 298K, pressure = 1atm, concentration = 1M. The symbol ‘ ’ represents the standard electrode potential of a cell.
The standard reduction potential is the likelihood that a species will be reduced. It is written in the form of a reduction half reaction. An example can be seen below where ‘M’ is a generic element and ‘n’ is the charge.
Complete answer:
Electronic configuration of given elements are as follows-
Across the first transition series, the negative values for standard electrode potential decreases across the period except for because it attains the stable half filled configuration after losing 2 electrons.
Hence, the correct order is
Option (C) is correct.
Additional information:
All those elements with negative reduction potentials act as strong reducing agents and liberate hydrogen from dilute acids.
Note:
The irregularity in the variation of electrode potentials is due to the irregular variation of the ionisation enthalpies and also the hydration energies of the divalent ions of these elements. The magnitude of electrode potential depends on the following factors, (i) Nature of the electrode, (ii) Concentration of the ions in solution, (iii) Temperature.
The standard reduction potential is the likelihood that a species will be reduced. It is written in the form of a reduction half reaction. An example can be seen below where ‘M’ is a generic element and ‘n’ is the charge.
Complete answer:
Electronic configuration of given elements are as follows-
Across the first transition series, the negative values for standard electrode potential decreases across the period except for
Hence, the correct order is
Option (C) is correct.
Additional information:
All those elements with negative reduction potentials act as strong reducing agents and liberate hydrogen from dilute acids.
Note:
The irregularity in the variation of electrode potentials is due to the irregular variation of the ionisation enthalpies and also the hydration energies of the divalent ions of these elements. The magnitude of electrode potential depends on the following factors, (i) Nature of the electrode, (ii) Concentration of the ions in solution, (iii) Temperature.
Latest Vedantu courses for you
Grade 10 | CBSE | SCHOOL | English
Vedantu 10 CBSE Pro Course - (2025-26)
School Full course for CBSE students
₹37,300 per year
Recently Updated Pages
Master Class 12 Business Studies: Engaging Questions & Answers for Success

Master Class 12 English: Engaging Questions & Answers for Success

Master Class 12 Economics: Engaging Questions & Answers for Success

Master Class 12 Social Science: Engaging Questions & Answers for Success

Master Class 12 Maths: Engaging Questions & Answers for Success

Master Class 12 Chemistry: Engaging Questions & Answers for Success

Trending doubts
Which one of the following is a true fish A Jellyfish class 12 biology CBSE

Why is insulin not administered orally to a diabetic class 12 biology CBSE

How do you convert from joules to electron volts class 12 physics CBSE

Why should a magnesium ribbon be cleaned before burning class 12 chemistry CBSE

The first microscope was invented by A Leeuwenhoek class 12 biology CBSE

The current flowing through the resistor in a series class 12 physics CBSE
