Home
Class 11
CHEMISTRY
The first ionization enthalpy (Delta(i)H...

The first ionization enthalpy `(Delta_(i)H)` values of the third period elements, Na, Mg and Si are respectively 496, 737 and 786 kJ/mol. Predict whether the first `Delta_(i)H` value for Al will be more close to 575 or 760 kJ/mol. Justify your answer.

Text Solution

Verified by Experts

It will be more close to `575 kJ mol^(-)`. The value for `Al` should be lower than that of `Mg` because of the effective shielding of `3p` electrons from the nucleus by `3s`-electrons.
Promotional Banner

Topper's Solved these Questions

  • PERIODIC CLASSIFICATION OF ELEMENTS AND GENERAL INORGANIC CHEMISTRY

    CENGAGE CHEMISTRY ENGLISH|Exercise Solved Examples|34 Videos

  • PERIODIC CLASSIFICATION OF ELEMENTS AND GENERAL INORGANIC CHEMISTRY

    CENGAGE CHEMISTRY ENGLISH|Exercise Ex 1.1|14 Videos

  • P-BLOCK GROUP 14 - CARBON FAMILY

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises Archives (Subjective)|9 Videos

  • PURIFICATION OF ORGANIC COMPOUNDS AND QUALITATIVE AND QUANTITATIVE ANALYSIS

    CENGAGE CHEMISTRY ENGLISH|Exercise Assertion Reasoning Type|5 Videos

Similar Questions

Explore conceptually related problems

The first ionization enthalpy (Delta_(t)H) values of the third period elements, Na, Mg and Si are respectively 496, 737 and 786 kJ mol^(-1) . Predict whether the first Delta_(t)H valye for Al will be more close to 575 or 760 kJ mol^(-1) ? Justify your answer.

The first ionisation enthalpy (Delta_(i)H^(o-)) values of the third period elements, Na, Mg and Si are respectively 496, 737 and 786 kJ mol^(-1) . Predict whether the first Delta_(i)H^(o-) value for Al will be more close to 575 or 760 kJ mol^(-1) ? Justify your answer.

The first ionization enthalpy (Delta_(i)H) values of the second period elements Li, Be and C are respectively 520, 899 and 1086 kJ mol^(-1) . Predict whther the first Delta_(i)H value for B will be more close to 690 or 990 kJ mol^(-1) ?

If I.E. of Na, Mg and Si are respectively 496, 737 and 786 kJ "mol"^(-) The I.E. of Al in KJ "mol"^(-) is :-

Ionisation enthalpy (Delta_(i)"H kJ mol"^(-1)) for the elements of group 13 follows the order.

Correct order of first ionization energy of the following metals Na, Mg, Al, Si in kJ mol^(–1) respectively are:

Correct order of first ionization energy of the following metals Na, Mg, Al, Si in KJ mol^(–1) respectively are:

Ionisation enthalpy (Delta_(t)H_(l) "in" kJ mol^(-1)) for the elements of group-13 follows the order

The first ionisation enthalpy values (in kJ mol^(-1) ) of group 13 elements are How would you explain this deviation from the general , trend?

If values of Delta_(f)H^(Theta) of ICl(g),Cl(g) , and I(g) are, respectively, 17.57,121.34 , and 106.96 J mol^(-1) . The value of I-Cl (bond energy) in J mol^(-1) is