Describing black coles
Why can't astronomers take a picture of a black hole?

-Gravity is so strong that even light cannot escape a black hole.

-The nearest black hole is too far away to be seen.

-There is no way to detect the locations of black holes.

-Black holes are too large to photograph.

A)   Gravity is so strong that even light cannot escape a black hole.

Explanation:

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.