The position of an element on the periodic table scientist predict the
number of electrons an atom will gain or lose during ion formation.
according to the periodic table of elements, which element is most likely to
gain two electrons when it forms an ion?

typically, most spiders possess eight eyes. however, others have as many as 12, and some don't have any. these eyes are for detecting light from dark, deciphering shapes and for gathering their prey.

micro/nanoscale topography surface exhibits many prominent properties and is extensively employed in biomedical device, microfluidic device and energy device fabrication. additionally, the clinical applications of biomaterials can be largely expanded with of nanostructured surfaces.