Question

Match the given elements with their valence electrons.​

Answer 1

• The atomic number of magnesium is 12. The arrangement of electrons in a magnesium atom is 2, 8, 2.

• Hence, the number of valence electrons in magnesium is 2.

• Moving to sulphur. The atomic number of sulphur is 16. The arrangement of electrons in the sulphur atom is 2, 8, 6.

• Hence, the number of valence electrons in the sulphur atom is 6.

• The next element is argon. The atomic number of argon is 18. Therefore, the arrangement of electrons in argon atom is 2, 8, 8.

• Hence , the number of valence electrons in argon atom is 8.