E M B I B E

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>PROBLEMS FOR PRACTICE>Q 3

HARD

11th CBSE

IMPORTANT

Earn 100

The first and second ionisation potentials of helium atoms are $24.58 eV$ and $54.4 eV$ respectively, calculate the energy in $kJ$ required to produce one mole of ${He}^{2 +}$ ions.

Important Questions on Classification of Elements and Periodicity in Properties

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>PROBLEMS FOR PRACTICE>Q 1

Arrange the followings in the order of increasing ionization enthalpy:
(i)

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2}

(ii)

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}

(iii)

1 s^{2} 2 s^{2} 2 p^{6}

(iv)

1 s^{2} 2 s^{2} 2 p^{2}

(v)

1 s^{2} 2 s^{2} 2 p^{3}

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>PROBLEMS FOR PRACTICE>Q 2

The electronic configuration of some neutral atoms are given. Which of these electronic configurations would be expected to have the highest (

∆_{i} H_{1})

?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>PROBLEMS FOR PRACTICE>Q 2

The electronic configuration of some neutral atoms are given. Which of these electronic configurations would be expected to have the highest (

∆_{i} H_{2})

?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>PROBLEMS FOR PRACTICE>Q 2

The electronic configuration of some neutral atoms are given. Which of these electronic configurations would be expected to have the highest (

∆_{i} H_{3})

?

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>PROBLEMS FOR PRACTICE>Q 2

The electronic configuration of some neutral atoms are given. Which of these electronic configurations would be expected to have the highest (

∆_{i} H_{4})

?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>PROBLEMS FOR PRACTICE>Q 3

Among the elements

Li, K, Ca, S and Kr

which one has the lowest first ionisation enthalpy? Which has the highest first ionisation enthalpy?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>PROBLEMS FOR PRACTICE>Q 4

Which of the following pairs of elements would you expect to have lower first Ionisation enthalpy? Explain.

Cl

or

F

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>PROBLEMS FOR PRACTICE>Q 4

Which of the following pairs of elements would you expect to have lower first Ionisation enthalpy? Explain.

$Cl$ or $S$

Learn and Prepare for any exam you want !

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The first and second ionisation potentials of helium atoms are 24.58 eV and 54.4 eV respectively, calculate the energy in kJ required to produce one mole of He2+ ions.

Important Questions on Classification of Elements and Periodicity in Properties

Learn and Prepare for any exam you want !

The first and second ionisation potentials of helium atoms are $24.58 eV$ and $54.4 eV$ respectively, calculate the energy in $kJ$ required to produce one mole of ${He}^{2 +}$ ions.