The boiling point of chlorine is −34 °c. which of the following best predicts the boiling point of iodine?
a) higher than −34 °c because dispersion forces are stronger in iodine due to a greater number of electrons.
b) lower than −34 °c because chlorine is more polar than iodine on account of its higher electronegativity.
c) higher than −34 °c because dipole-dipole interactions in iodine are stronger than dispersion forces in chlorine.
d) lower than −34 °c because permanent dipoles created in chlorine are stronger than temporary dipoles in iodine.

a) Higher than −34 °C because dispersion forces are stronger in iodine due to a greater number of electrons.

Explanation:

Both chlorine and Iodine are halogens. They belong to the 7th group on the periodic table.

To examine the trend of boiling point in this group we must consider the nature of the intermolecular bonds that would be formed by the molecules of these elements. We know that London dispersion forces, a type of van der Waals attraction would be more prevalent. This is so because the molecules here would be non-polar and the uneven distribution of the constantly moving electrons would initiate the intermolecular bonding.

The uneven charge distribution leads to the formation of a temporary dipole.

This makes boiling point increase down the group because more electrons becomes involved and the bond becomes stronger.

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.