Hydrogen bonding occurs in molecules when a (1 point) hydrogen atom forms a covalent bond with one other atom. hydrogen atom forms covalent bonds with more than one atom. hydrogen atom of a polarized molecule bonds with an electronegative atom hydrogen atoms form an ionic bond with one other atom

hydrogen atom of a polarized molecule bonds with an electro negative atom.

Explanation:

Hydrogen bonds are special type of dipole dipole forces which are formed when hydrogen bonds with an electro negative element. Hydrogen bonds are strongest type of bonds .Example: Bond between Oxygen of one water molecule to the hydrogen of another water molecule as shown in the image below.

Covalent bonds are formed by sharing of electrons among non metals.

Ionic bond is formed by transfer of electrons between metals and non metals.

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements