Radium (atomic no. 88): Group 2 (Alkaline Earth Metals), period 7 of the Periodic Table of elements.
Part of the transition metals which are groups 3-12
Group 17, Period 2.
This is a consequence of the law of periodicity of chemical elements.
The number of the protons in the nucleus of a chemical element is equivalent to the atomic number; the atomic number define the position of this element in the periodic table (group, period). And from these we can suppose the chemical properties of this element.
The element with atomic number 85 is astatine, symbol At
Strontium is group 2 element and is the second element in period 5 with an atomic number of 38
Lutetium is a chemical element with the symbol Lu and atomic number of 71. It has a period of 6 and belongs in the Lanthanide group.
This is a consequence of the law of periodicity of chemical elements.
Element Name: Arsenic. Chemical Symbol: As.
The number of the protons in the nucleus of a chemical element is equivalent to the atomic number; the atomic number define the position of this element in the periodic table (group, period). And from these we can suppose the chemical properties of this element.
Chlorine belongs to group 17 of period 3.It belongs to Halogens group with atomic number 17.
The element with atomic number 85 is astatine, symbol At
Strontium is group 2 element and is the second element in period 5 with an atomic number of 38
the Atomic number on Periodic Table is the identity of an element in the table , it gives the indications about Group, period and Block of elements it also predicts the chemical and physical properties of the element.
It is indium(In) which is in 5th period in group IIIA (or group 13).
In a given period, group 18 elements will have the highest atomic number.
Lutetium is a chemical element with the symbol Lu and atomic number of 71. It has a period of 6 and belongs in the Lanthanide group.
The atomic number of copper is 29, group 11, period 4.
Chromium is the element in period 4 and group 6.