The periodic table of elements is an amazing classification tool. There are many things that we chemists do which only require a quick glance at the table to obtain the answer we require. The periodic table …

Groups are families or columns on the periodic table. Some groups contain both metals and nonmetals, Other groups are only metals or only nonmetals. Group IV contains both nonmetals, metalloids, and …

This website (if everything works) should take you to a periodic table with the electronegativity values for each element. Note how helium, neon, and argon have an "unknown" electronegativity value for the …

Arsenic is isoelectronic with nitrogen (they are both Group V elements), so there are 5 valence electrons. Look at the position of arsenic in the Periodic Table. It is under phosphorus, which is under …

See explanation Atoms of metal are hold with metallic bond, which is a strong intramolecular force, therefore more heat energy is needed to overcome the intramolecular force between the …

An atom can lose its electron or gain electron from atoms of other elements. Electropositve metals like that in Group 1 and Group 2 of periodic table can readily donate or lose electrons. Alkali metals{Gr.1} …

Aug 20, 2017 · 1.66g Number of moles: n (Cu) = 0.0261mol Molar mass (from periodic table): 63.55g n = "m"/"M" Rearranged we get: m = n * M m = 0.0261 * 63.55 m = 1.658655 And to three significant …

It will go until it reaches iron. A star will fuse hydrogen into helium and then helium into the next element on the periodic table. This will continue until it reaches iron. Iron is too heavy to fuse and it will collect …

Sep 13, 2016 · Is it 8? How did I know that Z=8? Do I have the atomic numbers memorized? There really should be a copy of the Periodic Table beside you if you are doing your Chemistry/Physics …

As far as I know, the picometer is currently being used as the SI unit for atomic radii. A picometer is equal to 10^ (-12)"m". The more traditional unit used was the angstrom, for which you have "1 …