one goes sideways and one goes up and down. its just a way to locate the elements easier
the difference between groups (also known as families) and periods is: a group is a column and a period goes across the table remember that
Modern periodic table has 7 periods and 18 groups.
Periods on the periodic table go across and are based on the number of unexcited electrons increasing as you read across. Groups on the periodic table are read down the table and share the same number of valence electrons.
7 periods and 18 groups are there on the modern periodic table.
The horizontal rows on the periodic table are periods. Groups are the vertical columns on the periodic table.
the difference between groups (also known as families) and periods is: a group is a column and a period goes across the table remember that
Modern periodic table has 7 periods and 18 groups.
Periods on the periodic table go across and are based on the number of unexcited electrons increasing as you read across. Groups on the periodic table are read down the table and share the same number of valence electrons.
7 periods and 18 groups are there on the modern periodic table.
The columns are called groups and rows are called periods. There are 18 groups and 7 periods.
7The periodic table has 7 periods and 18 groups.
7The Periodic Table has 7 periods and 18 groups.
7 periods and 18 groups are there on the modern periodic table.
The horizontal rows on the periodic table are periods. Groups are the vertical columns on the periodic table.
groups
7 periods and 12 groups
The Periodic Table has 7 periods (horizontal rows) and 18 groups. The two groups of 14 elements at the bottom (lanthanides and actinides) are parts of the 6th and 7th periods, between groups 2 and 3, but are placed below to limit the displayed width of the table.