A magnesium ion, Mg2+, with a charge of 3.2×10−19C and an oxide ion, O2−, with a charge of −3.2×10−19C, are separated by a distance of 0.25 nm. How much work would be required to increase the separation of the two ions to an infinite distance?

Explanation:

Formula for work done is as follows.

           W =    

where,  k = proportionality constant =

            d = separation distance = 0.45 nm =

Now, we will put the given values into the above formula and calculate work done as follows.

         W =    

           =  

           =

Thus, we can conclude that work required to increase the separation of the two ions to an infinite distance is .

b. acid is the correct answer @jayxboof all social media

acid : acids are those which accepts an electron-pairs.

base : bases are those which donates ab electron-pairs.

alkali : it is a base that dissolves in water. it is basically a base and the ph greater than 7.

hydroxide ion : it is a poly-atomic ion which is negatively charged.

- lead + phosphoric acid = hydrogen + lead(ii) phosphate