Which element has an electron configuration of [kr]5s2?

Strontium

Explanation:

Strontium is a silvery-white, soft metal, good conductor of electricity. When exposed to air, it oxidizes quickly and therefore must be stored in kerosene. Upon combustion in the air, it produces a bright light and forms the oxide and the nitride of strontium. It reacts with water and from this process is formed the strontium hydroxide and released the molecular hydrogen.

It is an abundant element in nature: it is present, in the form of strontium compounds, in magmatic rocks. It is not found in its metallic form, but especially in the form of strontium sulphate.

oh it is true if thats what you are asking

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.