These rows are named periods.
Yes. It's called The Periodic Table of Elements.
The period number is equal to the number of shells. Periods are the horizontal rows on the periodic table. The number of shells increases down a group.
No. A Christmas tree is not part of the Periodic Table of Elements.
Sperm is not an element and therefore does not form any part of the periodic table.
to me it all the part
non metals are seen towards the right side of the periodic table
They are all in the same column (Group 7) of the periodic table and are also known as the halogens.
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.
metal
Oxygen is in the upper right side of the periodic table.
The Periodic table contains only elements, however, HO4 is a compound and hence has no place on the period table.
The chalcogens are the chemical elements in group 16 of the periodic table, which includes Oxygen.