Question : Identify whether the given statements about ionisation energy are correct or incorrect.
Statement A: The ionisation energy of an atom is the amount of energy that is required to remove an electron from a mole of atoms in the gas phase.
Statement B: The ionisation energy increases from top to bottom in groups and decreases from left to right across a period.
Option 1: Both Statements A and B are correct.
Option 2: Only Statement A is correct.
Option 3: Both Statements A and B are incorrect.
Option 4: Only Statement B is correct.
Correct Answer: Only Statement A is correct.
Solution : The correct answer is Only Statement A is correct .
The amount of energy required for an isolated, gaseous atom in the ground electronic state to discharge an electron and produce a cation is known as the ionisation energy. This energy is needed for each atom in a mole to lose one electron.
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Question : Identify whether the given statements about p-block elements are correct or incorrect.
Statement A: In p-block elements, the last electron enters the outermost p orbital.
Statement B: The non-metals and metalloids exist only in the p-block of the periodic
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