In the periodic table of elements there are seven horizontal rows of elements called periodsthe vertical columns of elements are called groups or families see also the periodic table metals nonmetals and metalloids periods in the periodic table in each period horizontal row the atomic numbers increase from left to right. The highlighted elements of the periodic table belong to the alkali metal element family todd helmenstine the alkali metals are recognized as a group and family of elements these elements are metals sodium and potassium are examples of elements in this family. In chemistry a group also known as a family is a column of elements in the periodic table of the chemical elements there are 18 numbered groups in the periodic table and the f block columns between groups 3 and 4 are not numbered. Families in the periodic table are the vertical columns and are also referred to as groups group 1a elements are the alkali metals and all have one electron in the outermost energy level because their electron configuration ends in s 1 . Families stick together we just covered the columns and rows of the periodic table there are also other less specific groups of elements these groups are all over the table
How it works:
1. Register a Free 1 month Trial Account.
2. Download as many books as you like ( Personal use )
3. No Commitment. Cancel anytime.
4. Join Over 100.000 Happy Readers.
5. That's it. What you waiting for? Sign Up and Get Your Books.