What is the oxidation state of each element in k2cr2o7


Asked by wiki @ in Chemistry viewed by 232 People


What is the oxidation state of each element in k2cr2o7?

Answered by wiki @


To begin this, you'll first note down the valencies of atoms you're sure about.

K is always 1+
And O is always 2-, except for in peroxide where it is 1-.

So now you must remember that a compound is always neutral. Your net charge has to be 0.

K2Cr2O7.

K2 (1+ x 2) = 2+
Cr (2x) = 2x
O7 (2- ×7) = 14-

+2 +2x + (-14) = 0
•Simple algebra.
2x -12 = 0
2x = 12
x = +6.

Each Cr atom has an oxidation number of +6.

Do you know the better answer?

Similar Questions

What is the oxidation state of each element in coh2

Asked by wiki @ in Chemistry viewed by 159 persons

What is the oxidation state of each element in COH2?

What is the oxidation state of each element in febr3

Asked by wiki @ in Chemistry viewed by 76 persons

What is the oxidation state of each element in FeBr2?

What determines the most likely oxidation state of an element

Asked by wiki @ in Chemistry viewed by 126 persons

What determines the most likely oxidation state of an element? A. The oxidation state the element has when not in a compound B. The average of all the oxidation states …

What is the oxidation state of each element in febr2

Asked by wiki @ in Chemistry viewed by 128 persons

What is the oxidation state of each element in febr2?

How is the variability in oxidation state of transition metals

Asked by wiki @ in Chemistry viewed by 123 persons

How is the oxidation state of a transition metal determined from the chemical formula ?

What are the two oxidation states of nitrogen in nh4no2

Asked by wiki @ in Chemistry viewed by 128 persons

What are the two oxidation states of nitrogen in nh4no2?

Which two elements have the same ground state electron configuration

Asked by wiki @ in Chemistry viewed by 103 persons

Two elements that have the same ground-state valence shell configuration of ns 2 np 2 are

What is the oxidation number of an element answers com

Asked by wiki @ in Chemistry viewed by 129 persons

What is the oxidation number of an element? A. The group number for the element O B. The number of valence electrons an element has O C. The charge an …

How do i find the oxidation number of an element

Asked by wiki @ in Chemistry viewed by 90 persons

What is the oxidation number of an element? A. The group number for the element O B. The number of valence electrons an element has O C. The charge an …

Determine the oxidation state of p in po33

Asked by wiki @ in Chemistry viewed by 111 persons

Determine the oxidation state of p in po33-.

Write the full ground state electron configuration for each element

Asked by wiki @ in Chemistry viewed by 139 persons

Write the full ground-state electron configuration for each: (a) Br (b) Mg (c) Se

Elements form oxide compounds with a general formula of mo

Asked by wiki @ in Chemistry viewed by 172 persons

A metal, M, forms an oxide compound with the general formula M2O. In which group on the Periodic Table could metal M be found? (1) Group 1 (3) Group 16 …

What does it strikes well and hardy mean

Asked by alexander02 @ in English viewed by 27 persons

Anoche tu hermanosu tarea muy rapido

Asked by isaiah67 @ in Spanish viewed by 21 persons

Most viewed questions in Chemistry


Convert 8.00 x 10 20 molecules of h2 to moles

Asked by wiki @ in Chemistry viewed by 919 persons


How many carbon atoms are in 2.12 mol of propane

Asked by wiki @ in Chemistry viewed by 480 persons


Which of the following is true about subatomic particles

Asked by wiki @ in Chemistry viewed by 472 persons



An oxidation reduction reaction that is also a synthesis reaction

Asked by wiki @ in Chemistry viewed by 446 persons


What is the difference between a white and red reaction

Asked by wiki @ in Chemistry viewed by 408 persons


Determine the minimum mass of hydrogen gas required to produce

Asked by wiki @ in Chemistry viewed by 397 persons



A solution that contains 70g of nano3 at 30 c

Asked by wiki @ in Chemistry viewed by 378 persons


What is the uncertainty of a 50 ml graduated cylinder

Asked by wiki @ in Chemistry viewed by 373 persons


What is the electron pair geometry for c in cs2

Asked by wiki @ in Chemistry viewed by 362 persons



Calculate the molality of a 20 by mass ammonium sulfate

Asked by wiki @ in Chemistry viewed by 356 persons


Which of the following statements regarding electrical safety is correct

Asked by wiki @ in Chemistry viewed by 356 persons


Write the mechanism for the reaction of cyclohexane with bromine

Asked by wiki @ in Chemistry viewed by 347 persons



Arrange the following elements in order of decreasing ionization energy

Asked by wiki @ in Chemistry viewed by 339 persons


Which factor causes a decrease in the rate of dissolution

Asked by wiki @ in Chemistry viewed by 331 persons


Calculate the mass of 3.05 buckets of golf balls answer

Asked by wiki @ in Chemistry viewed by 324 persons