Consider four atoms from the second period: lithium, beryllium, boron, carbon, and nitrogen. which of these elements has the lowest electronegativity value?

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons