Chapter 6.3, Problem 23SSC

Interpretation Introduction

Interpretation:

The differences in electro negativity, ionic radius, atomic radius, and first ionization energy for oxygen and beryllium needs to be calculated.

Concept introduction:

The tendency of attracting pair of shared electrons towards it self by an atom is defined as electro negativity.

Ionic radius can be defined as the radius of the ion in an atom. The atomic radius of a particular element is the measure of the atoms size. It can also be defined as the distance between its boundary and nucleus of the element.

Ionization energy can be defined as the measure of amount of energy needed to extract an electron form an atom or an ion. The energy to remove the first electron is termed as first ionization energy, similarly the energy required to remove the second electron is termed as second ionization energy.

Answer to Problem 23SSC

The differences of oxygen and beryllium are as follows:

Electronegativity=1.87

Ionic radius = -1 pm

Atomic radius = 40pm.

First ionization energy = 414.9 kJ/mol

Explanation of Solution

Reason for correct option:

The electro negativity value of Oxygen is 3.44 and that of Beryllium is 1.57. Hence, the difference in their electro negativity is 1.87.

The ionic radius of Oxygen is 152 pm and that of Beryllium is 153pm. Hence, the difference in their ionic radius is of 1 pm.

The atomic radius of Oxygen is 152 pm and that of Beryllium is 112pm. Hence, the difference in their atomic radius is 40pm.

The first ionization energy of Oxygen is 1313.9 kJ/mol and that of Beryllium is 899 kJ/mol. Hence, the difference in their first ionization energy is 414.9 kJ/mol

Conclusion

Reason for incorrect option:

The differences in electro negativity, ionic radius, atomic radius, and first ionization energy for oxygen and beryllium are 1.87, 1pm, 40 pm and 414.9 kJ/mol respectively.