Here, a chemist describes group 15 and the crucial role they play in life. The elements that make up each column of the periodic table share a set of common traits. U.S.

His table leaves a hole under yttrium and has three 15-element rows in an f-block floating beneath the main table. Nor is he so constrained by atomic numbers. For instance, element 164 is followed ...

The periodic table of the elements isn't as confusing as it looks. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Scientists had a ...

Group 1 elements have similar physical and ... 0.15: In all liquids and tissue: ... The modern periodic table is based on Dmitri Mendeleev’s 1896 observations that chemical elements can be ...

If you are intimidated by the periodic table, then this introduction through the first column of elements will give you a feel for how and why the elements are arranged in this order.