What is the oxidation no. of sulphur in na2s2o6

Oxidation state of sulfur S: +5.

Explanation

Known oxidation states:

Na: +1. Sodium Na is a main group metal. The oxidation state of Na in compounds should be positive and the same as its group number. The new IUPAC group number (1 ~ 16) of Na is 1. The oxidation state of Na should thus be +1.O: -2. Oxygen is the second most electronegative element on the periodic table. The oxidation state of oxygen is mostly -2 with a few exceptions: .

What the question is asking for:

The oxidation state of S can vary from compound to compound. Let the oxidation state of S in be .

The oxidation state of each atom in a compound should add up to zero.

There are two Na atoms in this formula. The oxidation state on each is +1. Add ;There are six O atoms in this formula. The oxidation state on each is -2. Add ;There are two S atoms in this formula. The oxidation state of each is assumed to be . Add .

Sum of oxidation states on each atom in :

.

Again, this value should equals to zero since is overall a neutral compound.

;

.

Thus the oxidation state of sulfur in should be +5.

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later