valence electrons and energy sublevels
The modern periodic table has seven periods.
There are seven metalloids on the periodic table.
seven
No, there are seven
A periodic table has seven periods. It also has 18 groups and 4 different families.
A horizontal row in the periodic table is called a period. There are seven periods in the periodic table, labeled from 1 to 7. Each period represents the energy levels of the elements within that row.
Catfish
The Periodic Table has 18 groups and 7 periods.
18 columnsThere are 18 columns in the s, d, and p blocks on the periodic table.The f block adds 14 more to periods 6 & 7 when included.
Refer to the related link.
there are 7 periods in the periodic table118
Horizontal row in a periodic table is called Period.There are seven periods in a periodic table.All elements in a row have same number of electronic shells.