In the modern periodic table, the elements are placed in order to increasing atomic number. These have been numerous designs of the table over the years but the most common is the long form of periodic table. The long form of periodic table shows all the elements in numerical order. What is the atomic number of the (as yet undiscovered) alkali earth metal after radium?

In the modern periodic table, the elements are placed in order to incr

1.	In the modern periodic table, the elements are placed in order to increasing atomic number. These have been numerous designs of the table over the years but the most common is the long form of periodic table. The long form of periodic table shows all the elements in numerical order. What is the atomic number of the (as yet undiscovered) alkali earth metal after radium?
Answer» 120 121 124 118 Answer :A