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The incorrect statement among the following is : [JEE 1997]
- a)The first ionisation potential of Al is less than the first ionisation potential of Mg
- b)The second ionisation potential of Mg is greater than the second ionisation potential of Na
- c)The first ionisation potential of Na is less than the first ionisation potential of Mg
- d)The third ionisation potential of Mg is greater than the third ionisation potential of Al
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
The incorrect statement among the following is : [JEE 1997]a)...
(a) Correct statement : In a period, element of 2ndgroup ahs higher first ionization potential than element group of 13.
(b) Incorrect statement : Mg+ required less energy for further ionization than Na+ because of noble gas configuration of Na+.
(c) Correct statement : Ionization energy increases from left to right in a period.
(d) Correct statement : Mg2+ has noble gas configuration, require greater energy for further ionization than Na2+.
Most Upvoted Answer
The incorrect statement among the following is : [JEE 1997]a)...
Ionisation Potentials of Elements
First Ionisation Potential
- The energy required to remove the outermost electron from an isolated gaseous atom to form a cation.
- Generally decreases down a group and increases across a period.
Second Ionisation Potential
- The energy required to remove the second electron from a positively charged ion.
- Always greater than the first ionisation potential.
Third Ionisation Potential
- The energy required to remove the third electron from a positively charged ion.
- Always greater than the second ionisation potential.
Explanation
The incorrect statement is option B, which states that the second ionisation potential of Mg is greater than the second ionisation potential of Na.
This statement is incorrect because the second ionisation potential of Mg is actually less than the second ionisation potential of Na. This is because Mg has a smaller atomic radius than Na, which leads to a stronger nuclear attraction on the outermost electron, making it more difficult to remove.
Therefore, the correct order of second ionisation potentials is:
Na < mg="" />< />
The other options are correct:
- The first ionisation potential of Al is less than the first ionisation potential of Mg, as Al has a larger atomic radius and weaker nuclear attraction on the outermost electron.
- The first ionisation potential of Na is less than the first ionisation potential of Mg, as Na has a larger atomic radius and weaker nuclear attraction on the outermost electron.
- The third ionisation potential of Mg is greater than the third ionisation potential of Al, as Mg has a smaller atomic radius and stronger nuclear attraction on the remaining electrons.
First Ionisation Potential
- The energy required to remove the outermost electron from an isolated gaseous atom to form a cation.
- Generally decreases down a group and increases across a period.
Second Ionisation Potential
- The energy required to remove the second electron from a positively charged ion.
- Always greater than the first ionisation potential.
Third Ionisation Potential
- The energy required to remove the third electron from a positively charged ion.
- Always greater than the second ionisation potential.
Explanation
The incorrect statement is option B, which states that the second ionisation potential of Mg is greater than the second ionisation potential of Na.
This statement is incorrect because the second ionisation potential of Mg is actually less than the second ionisation potential of Na. This is because Mg has a smaller atomic radius than Na, which leads to a stronger nuclear attraction on the outermost electron, making it more difficult to remove.
Therefore, the correct order of second ionisation potentials is:
Na < mg="" />< />
The other options are correct:
- The first ionisation potential of Al is less than the first ionisation potential of Mg, as Al has a larger atomic radius and weaker nuclear attraction on the outermost electron.
- The first ionisation potential of Na is less than the first ionisation potential of Mg, as Na has a larger atomic radius and weaker nuclear attraction on the outermost electron.
- The third ionisation potential of Mg is greater than the third ionisation potential of Al, as Mg has a smaller atomic radius and stronger nuclear attraction on the remaining electrons.
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The incorrect statement among the following is : [JEE 1997]a)...
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The incorrect statement among the following is : [JEE 1997]a)The first ionisation potential of Al is less than the first ionisation potential of Mgb)The second ionisation potential of Mg is greater than the second ionisation potential of Nac)The first ionisation potential of Na is less than the first ionisation potential of Mgd)The third ionisation potential of Mg is greater than the third ionisation potential of AlCorrect answer is option 'B'. Can you explain this answer?
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The incorrect statement among the following is : [JEE 1997]a)The first ionisation potential of Al is less than the first ionisation potential of Mgb)The second ionisation potential of Mg is greater than the second ionisation potential of Nac)The first ionisation potential of Na is less than the first ionisation potential of Mgd)The third ionisation potential of Mg is greater than the third ionisation potential of AlCorrect answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The incorrect statement among the following is : [JEE 1997]a)The first ionisation potential of Al is less than the first ionisation potential of Mgb)The second ionisation potential of Mg is greater than the second ionisation potential of Nac)The first ionisation potential of Na is less than the first ionisation potential of Mgd)The third ionisation potential of Mg is greater than the third ionisation potential of AlCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The incorrect statement among the following is : [JEE 1997]a)The first ionisation potential of Al is less than the first ionisation potential of Mgb)The second ionisation potential of Mg is greater than the second ionisation potential of Nac)The first ionisation potential of Na is less than the first ionisation potential of Mgd)The third ionisation potential of Mg is greater than the third ionisation potential of AlCorrect answer is option 'B'. Can you explain this answer?.
The incorrect statement among the following is : [JEE 1997]a)The first ionisation potential of Al is less than the first ionisation potential of Mgb)The second ionisation potential of Mg is greater than the second ionisation potential of Nac)The first ionisation potential of Na is less than the first ionisation potential of Mgd)The third ionisation potential of Mg is greater than the third ionisation potential of AlCorrect answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The incorrect statement among the following is : [JEE 1997]a)The first ionisation potential of Al is less than the first ionisation potential of Mgb)The second ionisation potential of Mg is greater than the second ionisation potential of Nac)The first ionisation potential of Na is less than the first ionisation potential of Mgd)The third ionisation potential of Mg is greater than the third ionisation potential of AlCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The incorrect statement among the following is : [JEE 1997]a)The first ionisation potential of Al is less than the first ionisation potential of Mgb)The second ionisation potential of Mg is greater than the second ionisation potential of Nac)The first ionisation potential of Na is less than the first ionisation potential of Mgd)The third ionisation potential of Mg is greater than the third ionisation potential of AlCorrect answer is option 'B'. Can you explain this answer?.
Solutions for The incorrect statement among the following is : [JEE 1997]a)The first ionisation potential of Al is less than the first ionisation potential of Mgb)The second ionisation potential of Mg is greater than the second ionisation potential of Nac)The first ionisation potential of Na is less than the first ionisation potential of Mgd)The third ionisation potential of Mg is greater than the third ionisation potential of AlCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
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The incorrect statement among the following is : [JEE 1997]a)The first ionisation potential of Al is less than the first ionisation potential of Mgb)The second ionisation potential of Mg is greater than the second ionisation potential of Nac)The first ionisation potential of Na is less than the first ionisation potential of Mgd)The third ionisation potential of Mg is greater than the third ionisation potential of AlCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for The incorrect statement among the following is : [JEE 1997]a)The first ionisation potential of Al is less than the first ionisation potential of Mgb)The second ionisation potential of Mg is greater than the second ionisation potential of Nac)The first ionisation potential of Na is less than the first ionisation potential of Mgd)The third ionisation potential of Mg is greater than the third ionisation potential of AlCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of The incorrect statement among the following is : [JEE 1997]a)The first ionisation potential of Al is less than the first ionisation potential of Mgb)The second ionisation potential of Mg is greater than the second ionisation potential of Nac)The first ionisation potential of Na is less than the first ionisation potential of Mgd)The third ionisation potential of Mg is greater than the third ionisation potential of AlCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The incorrect statement among the following is : [JEE 1997]a)The first ionisation potential of Al is less than the first ionisation potential of Mgb)The second ionisation potential of Mg is greater than the second ionisation potential of Nac)The first ionisation potential of Na is less than the first ionisation potential of Mgd)The third ionisation potential of Mg is greater than the third ionisation potential of AlCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice JEE tests.
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