Periodic Trends in Chemical Properties of Elements
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313375 Which of the following transitions involves maximum amount of energy?

1 \({\rm{M}}_{{\rm{(g)}}}^{\rm{ - }} \to {{\rm{M}}_{{\rm{(g)}}}}\)
2 \({{\rm{M}}_{{\rm{(g)}}}} \to {\rm{M}}_{{\rm{(g)}}}^{\rm{ + }}\)
3 \({\rm{M}}_{{\rm{(g)}}}^{\rm{ + }} \to {\rm{M}}_{{\rm{(g)}}}^{{\rm{2 + }}}\)
4 \({\rm{M}}_{{\rm{(g)}}}^{{\rm{2 + }}} \to {\rm{M}}_{{\rm{(g)}}}^{{\rm{3 + }}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313376 Consider the following ionisation enthalpies of two elements ‘A’ and ‘B’.
(A) Element 1st - 899     Ionisation 2nd - 1757     enthalpy(kJ/mol) 3rd - 14847
(B) Element 1st - 737     Ionisation 2nd - 1450     enthalpy(kJ/mol) 3rd - 7731
Which of the following statements is correct?

1 Both ‘A’ and ‘B’ belong to group-1 where ‘B’ comes below ‘A’.
2 Both ‘A’ and ‘B’ belong to group -1 where ‘A’ comes below ‘B’.
3 Both ‘A’ and ‘B’ belong to group -2 where ‘B’ below ‘A’.
4 Both ‘A’ and ‘B’ belong to group -2 where ‘A’ comes below ‘B’.
JEE - 2017
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313377 Generally, the first ionization energy increases along a period. But there are some exceptions. One which is not an exception is

1 N and O
2 Na and Mg
3 Mg and Al
4 Be and B
KCET - 2010
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313378 The first ionisation potentials in electron volts of nitrogen and oxygen atoms are respectively given by

1 14.6, 13.6
2 13.6, 14.6
3 13.6, 13.6
4 14.6, 14.6
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313375 Which of the following transitions involves maximum amount of energy?

1 \({\rm{M}}_{{\rm{(g)}}}^{\rm{ - }} \to {{\rm{M}}_{{\rm{(g)}}}}\)
2 \({{\rm{M}}_{{\rm{(g)}}}} \to {\rm{M}}_{{\rm{(g)}}}^{\rm{ + }}\)
3 \({\rm{M}}_{{\rm{(g)}}}^{\rm{ + }} \to {\rm{M}}_{{\rm{(g)}}}^{{\rm{2 + }}}\)
4 \({\rm{M}}_{{\rm{(g)}}}^{{\rm{2 + }}} \to {\rm{M}}_{{\rm{(g)}}}^{{\rm{3 + }}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313376 Consider the following ionisation enthalpies of two elements ‘A’ and ‘B’.
(A) Element 1st - 899     Ionisation 2nd - 1757     enthalpy(kJ/mol) 3rd - 14847
(B) Element 1st - 737     Ionisation 2nd - 1450     enthalpy(kJ/mol) 3rd - 7731
Which of the following statements is correct?

1 Both ‘A’ and ‘B’ belong to group-1 where ‘B’ comes below ‘A’.
2 Both ‘A’ and ‘B’ belong to group -1 where ‘A’ comes below ‘B’.
3 Both ‘A’ and ‘B’ belong to group -2 where ‘B’ below ‘A’.
4 Both ‘A’ and ‘B’ belong to group -2 where ‘A’ comes below ‘B’.
JEE - 2017
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313377 Generally, the first ionization energy increases along a period. But there are some exceptions. One which is not an exception is

1 N and O
2 Na and Mg
3 Mg and Al
4 Be and B
KCET - 2010
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313378 The first ionisation potentials in electron volts of nitrogen and oxygen atoms are respectively given by

1 14.6, 13.6
2 13.6, 14.6
3 13.6, 13.6
4 14.6, 14.6
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313375 Which of the following transitions involves maximum amount of energy?

1 \({\rm{M}}_{{\rm{(g)}}}^{\rm{ - }} \to {{\rm{M}}_{{\rm{(g)}}}}\)
2 \({{\rm{M}}_{{\rm{(g)}}}} \to {\rm{M}}_{{\rm{(g)}}}^{\rm{ + }}\)
3 \({\rm{M}}_{{\rm{(g)}}}^{\rm{ + }} \to {\rm{M}}_{{\rm{(g)}}}^{{\rm{2 + }}}\)
4 \({\rm{M}}_{{\rm{(g)}}}^{{\rm{2 + }}} \to {\rm{M}}_{{\rm{(g)}}}^{{\rm{3 + }}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313376 Consider the following ionisation enthalpies of two elements ‘A’ and ‘B’.
(A) Element 1st - 899     Ionisation 2nd - 1757     enthalpy(kJ/mol) 3rd - 14847
(B) Element 1st - 737     Ionisation 2nd - 1450     enthalpy(kJ/mol) 3rd - 7731
Which of the following statements is correct?

1 Both ‘A’ and ‘B’ belong to group-1 where ‘B’ comes below ‘A’.
2 Both ‘A’ and ‘B’ belong to group -1 where ‘A’ comes below ‘B’.
3 Both ‘A’ and ‘B’ belong to group -2 where ‘B’ below ‘A’.
4 Both ‘A’ and ‘B’ belong to group -2 where ‘A’ comes below ‘B’.
JEE - 2017
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313377 Generally, the first ionization energy increases along a period. But there are some exceptions. One which is not an exception is

1 N and O
2 Na and Mg
3 Mg and Al
4 Be and B
KCET - 2010
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313378 The first ionisation potentials in electron volts of nitrogen and oxygen atoms are respectively given by

1 14.6, 13.6
2 13.6, 14.6
3 13.6, 13.6
4 14.6, 14.6
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313375 Which of the following transitions involves maximum amount of energy?

1 \({\rm{M}}_{{\rm{(g)}}}^{\rm{ - }} \to {{\rm{M}}_{{\rm{(g)}}}}\)
2 \({{\rm{M}}_{{\rm{(g)}}}} \to {\rm{M}}_{{\rm{(g)}}}^{\rm{ + }}\)
3 \({\rm{M}}_{{\rm{(g)}}}^{\rm{ + }} \to {\rm{M}}_{{\rm{(g)}}}^{{\rm{2 + }}}\)
4 \({\rm{M}}_{{\rm{(g)}}}^{{\rm{2 + }}} \to {\rm{M}}_{{\rm{(g)}}}^{{\rm{3 + }}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313376 Consider the following ionisation enthalpies of two elements ‘A’ and ‘B’.
(A) Element 1st - 899     Ionisation 2nd - 1757     enthalpy(kJ/mol) 3rd - 14847
(B) Element 1st - 737     Ionisation 2nd - 1450     enthalpy(kJ/mol) 3rd - 7731
Which of the following statements is correct?

1 Both ‘A’ and ‘B’ belong to group-1 where ‘B’ comes below ‘A’.
2 Both ‘A’ and ‘B’ belong to group -1 where ‘A’ comes below ‘B’.
3 Both ‘A’ and ‘B’ belong to group -2 where ‘B’ below ‘A’.
4 Both ‘A’ and ‘B’ belong to group -2 where ‘A’ comes below ‘B’.
JEE - 2017
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313377 Generally, the first ionization energy increases along a period. But there are some exceptions. One which is not an exception is

1 N and O
2 Na and Mg
3 Mg and Al
4 Be and B
KCET - 2010
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313378 The first ionisation potentials in electron volts of nitrogen and oxygen atoms are respectively given by

1 14.6, 13.6
2 13.6, 14.6
3 13.6, 13.6
4 14.6, 14.6
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