The number of shells in the elements of 3rd period is __________.

Keep practicing — related questions

• The number of shells in the elements of second period is
• The number of elements in the first period of the periodic table is __________.
• The element of atomic number 22 belongs to which of the following periods of the periodic table?
• What is the number of elements in period 2 of the periodic table?
• The number of electrons in the valence shell of an element indicates
• The modern periodic table has elements arranged in increasing atomic numbers. It has ___________vertical co...
• To which period does an element with atomic number 13 belong?
• The element of atomic number 12 belongs to which of the following groups of the periodic table?