Arrange the following elements in the order of increasing atomic number.

B , Ne , K , O

Correct option is C

To arrange elements in increasing atomic number, we need to know their atomic numbers:

• B (Boron): Atomic number 5
• O (Oxygen): Atomic number 8
• Ne (Neon): Atomic number 10
• K (Potassium): Atomic number 19

Arranging these in increasing order: B (5), O (8), Ne (10), K (19).
Thus, the correct order is B, O, Ne, K.

Information Booster

• Atomic number: Refers to the number of protons in an atom's nucleus. It determines the element's identity.
• Periodic table order: Elements are arranged in increasing atomic number from left to right.
• Periodic groupings:
  • Boron (B): Group 13, p-block.
  • Oxygen (O): Group 16, p-block.
  • Neon (Ne): Group 18, noble gas.
  • Potassium (K): Group 1, alkali metal.