"Na" is Sodium.
The horizontal rows in a periodic table are called periods. Periods represent the number of energy levels an atom's electrons occupy in an element's electron cloud.
A horizontal row is called a period .
The periodic table includes 7 periods, which are horizontal rows that represent the same number of electron shells in an atom's structure. Each period corresponds to the energy level of the electron shells within the elements in that row.
A row of elements across the periodic table is called a period. Periods represent the number of electron shells in an atom.
IP Adress or internet Protocal Adress.. Hanz :)
Periods
They are called an octet.
Periods represent the number of shells in a particular element
Sorry but your question is an oxymoron as 'Old Britain' and 'Victorian times' represent two widely separated time periods.
They are put into periods based on their number of electron shells.
Usually, they represent periods between extinction events, where a particular type of lifeform was dominant.
There are decimal points in decimal numbers. They look just like periods.
The elements on the periodic table are separated into periods based on the number of electron shells they have. Elements in the same period have the same number of electron shells, which influences their chemical properties and reactivity.
comas
the hood
a model of evolution in which short periods of drastic change in species are separated by long periods of little or no change