Question : Which of the following elements has an atomic number greater than that of fluorine?
Option 1: Sodium
Option 2: Beryllium
Option 3: Nitrogen
Option 4: Boron
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Correct Answer: Sodium
Solution : The correct option is Sodium
Sodium is an element with a higher atomic number than fluorine. Sodium has an atomic number of 11 and Fluorine's atomic number is 9.
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Question : The ionisation energy of nitrogen is greater than that of oxygen because nitrogen has:
Option 1: high bond dissociation energy
Option 2: smaller atomic radius
Option 3: half-filled P-orbitals
Option 4: high nuclear charge
Question : Which of the following elements has the lowest melting point?
Option 2: Tin
Option 3: Radon
Option 4: Radium
Question : Which of the following pairs of "elements - valency" is correct? I. Boron - 2 II. Fluorine - 3
Option 1: Neither I nor II
Option 2: Both I and II
Option 3: Only II
Option 4: Only I
Question : Which one of the following elements is an example of noble gas?
Option 1: Nitrogen
Option 2: Hydrogen
Option 3: Chlorine
Option 4: Helium
Question : Which one of the following elements is associated with teeth disorder?
Option 1: Chlorine
Option 2: Fluorine
Option 3: Bromine
Option 4: Iodine
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