Every element in the top row (the first period) has one orbital for its electrons. All of the elements in the second row (the second period) have two orbitals for their electrons. It goes down the Periodic Table like that. This also means that the atomic weight of the elements gets larger and larger in each period.
Elements in a Period Have how many shells for the Electrons in Common. eg. period 3 elements all have 3 shells.
The number of electrons in a shell goes like this:
2,8,8,18,18,18,3.
See the link bellow for details.
The Periodic Table has 18 groups and 7 periods.
The columns are called groups and rows are called periods. There are 18 groups and 7 periods.
False; That would be called groups. Periods are horiztonal rows.
In the periodic table of the elements there are 7 periods and 18 groups. The rows are called periods and columns are called groups. You may be getting confused by the lanthanides and actinides. These groups of elements are found in two rows at the bottom and seem to not be a part of the table. However, if you find and extended version of the table you will see that, technically, these two rows belong in Periods 6 and 7.
Periodic table is arranged in rows and columns. there are 7 periods and 18 groups.
Modern periodic table has 7 periods and 18 groups.
7 periods and 18 groups are there on the modern periodic table.
7The periodic table has 7 periods and 18 groups.
The horizontal rows on the periodic table are periods. Groups are the vertical columns on the periodic table.
groups
periodic table is classified into groups and periods.There are 18 groups and 7 periods in periodic table.
7 periods and 18 groups are there on the modern periodic table.
The rows (Horizontal) are called Periods and the Columms (Vertical) are called Groups.
Groups are the vertical columns. Periods are the horizontal rows in the periodic table.
The Periodic Table has 18 groups and 7 periods.
A periodic table has seven periods. It also has 18 groups and 4 different families.
The horizontal lines are called "periods" and show how many "shells" each atom hasThe horizontal rows in the periodic table are called periods. The vertical columns are called groups.