What is the difference between a molecular formula, structural formula and an electron dot formula? Give an example of each.

Explanation:

Molecular formula

Molecular formula is used to represent exact no. of different atoms present in a molecule. For example, molecular formula of glucose is . That means one molecule of glucose has 6 molecules of C, 12 molecules of hydrogen and 6 molecules of oxyhen.

Structural formula

Graphic structure of a compound is represented by a structural formula. Bonding present between atoms are also shown. Structural formula of ethyl alcohol is shown in the attachment

Electron dot formula

Electron dot structure are used to represent possible structure of the compound along with bonding electrons and lone pair electrons. It is also known as Lewis dot structure. Electron dot structure of methane is shown in the attachment.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."