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Question

What is the fifth symbol on the periodic table?


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Solution

Periodic table:

  • The periodic table is an arrangement of all the elements in accordance with their increasing atomic number and recurring chemical properties.
  • There are 118 elements in the periodic table.
  • In the periodic table, there are 18 groups and 7 periods.

Periodic table - Wikipedia

  • The fifth element is Boron B and it has the atomic number 5.
  • The atomic mass of Boron is 10.81u.
  • It is a non-metal that belongs to period 2 and group 13.
  • The electronic configuration of Boron is 1s22s22p1 or [He]2s22p1.

Hence, the fifth symbol of the periodic table is B.


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