The human eye contains a certain protein called rhodopsin that changes shape when it is exposed to light. when rhodopsin absorbs light, part of it undergoes a chemical change. this is how eyes sense the presence of light.

Drag the tiles to the correct locations. each tile can be used more than once, but not all tiles will be used. one or more locations will remain empty. nitrosyl fluoride has the chemical formula nof nitrogen has five valence electrons, oxygen has six, and fluorine has seven. complete the lewis structure for this covalent compound. f n = = = . : : 0 : reset next um. all rights reserved us 2