Identify the formula for the binary covalent compound, phosphorus pentabromide. a. pbr5 b. pbr5 c. 5pbr d. p5br

A.  PBr5

Explanation:

To write the formulas for a compound, first identify what the elements used are.

In phosphorus pentabromide, the elements are phosphorus and bromine (bromine => bromide in a compound name). Find these symbols on your periodic table.

Phosphorus = P

Bromine = Br

Write them one after the other:

PBr

Then, determine the number of each atom, which will be written as a subscript. The word penta is the greek prefix meaning 5. Since it's attached to "bromide", there are 5 bromine atoms.

PBr₅

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .