Name the element which has electronic configuration 2, 8, 2.
Name the element which has electronic configuration 2, 8, 2.
Step-1: The elements in periodic table are placed in periods and groups. Periods are horizontal rows that has increasing atomic numbers. Groups are vertical columns. The groups have similar chemical properties. There are 7 periods and 18 groups in periodic table.
The elements are classified on the basis of electronic configuration. The atomic number of an element gives the number of protons in the nucleus of the element.
Step-2: To find the shell notation
Since the electronic configuration is 2, 8, 2, the element has 2 electrons in K-shell, 8 electrons in L-shell and 2 electrons in M-shell.
Step-3: To find the atomic number
Atomic number of the element = 2+8+2 = 12.
The element with atomic number 12 is Magnesium (Mg).
Final answer:
Therefore, the element with electronic configuration 2, 8, 2 is Magnesium.
Step-1: The elements in periodic table are placed in periods and groups. Periods are horizontal rows that has increasing atomic numbers. Groups are vertical columns. The groups have similar chemical properties. There are 7 periods and 18 groups in periodic table.
The elements are classified on the basis of electronic configuration. The atomic number of an element gives the number of protons in the nucleus of the element.
Step-2: To find the shell notation
Since the electronic configuration is 2, 8, 2, the element has 2 electrons in K-shell, 8 electrons in L-shell and 2 electrons in M-shell.
Step-3: To find the atomic number
Atomic number of the element = 2+8+2 = 12.
The element with atomic number 12 is Magnesium (Mg).
Final answer:
Therefore, the element with electronic configuration 2, 8, 2 is Magnesium.
