Which elements would you expect to gain electrons in chemical changes?
The elements which are metals loss the electrons and nonmetals gain the electrons.
(a)Nitrogen is the lightest member of group 15 of the periodic table, often called the pnictogens.
It is a non metal and has 3 valence electrons to obtain inert gas configuration so it accepts 3 electrons and obtains neon configuration .
(b)iodine is a chemical element with symbol I and atomic number 53. The heaviest of the stable halogens, it exists as a lustrous, purple-black metallic solid at standard conditions that sublimes readily to form a violet gas. As it is a metal it loses the electrons .
(c) Tungsten, also known as wolfram, is a chemical element with symbol W and atomic number 74. The word tungsten comes from the Swedish language tung sten, which directly translates to heavy stone.Its name in Swedish is volfram, however, in order to distinguish it from scheelite, which is alternatively named tungsten in Swedish.
Tungsten is the only metal from the third transition series that is known to occur in biomolecules, where it is used in a few species of bacteria and archaea. It is the heaviest element known to be essential to any living organism.Tungsten interferes with molybdenum...