Hiii, today I'm going to tell you allll about the periodic table with some of my friends. So come on and tag along!
Let's start with the basics of the periodic table they are put into four different groups:the most reactive metals and non metals,metaliods non metals and metals.
The groups/families are the valence electrons The periods are the num,ber of energy levels/orbitals.
PERIODIC TABLE. ... As with any grid, the periodic table has rows running left to right, and columns running up and down. The rows are called PERIODS and the columns are called GROUPS. Hydrogen (H) is the first element in the periodic tablebecause it has just one proton in its nucleus.
The number above the symbol is the atomic mass (or atomic weight)
Every element has a unique atomic number.
The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number, electron configuration, and recurring chemical properties, whose structure shows periodic trends.