As in DNA replication, RNA is synthesized in the 5' â 3' direction (from the point of view of the growing RNA transcript). Only one of the two DNA strands is transcribed. This strand is called the template strand, because it provides the template for ordering the sequence of nucleotides in an RNA transcript.
The properties of the chemical elements are summarized on the periodic table, which organizes the elements by increasing atomic number into rows (periods) in which the columns (groups) share recurring (periodic) physical and chemical properties.
Periods (rows) are the horizontal arrangements of the elements. . Elements in the same Period have the same number of occupied electron shells (energy levels) . There are seven (7) periods on the Periodic Table of the Elements. Periodic Law: The properties of the elements are periodic function of their atomic numbers. In other words, by arranging the elements in the order of increasing atomic numbers, elements with similar. properties end up in the same group.