Classification of Elements and Periodicity Archives - Page 5 of 10

Which of the following elements will have the lowest first ionisation energy? Options (a) Li (b) Mg (c) Ca (d)…

7 years ago

When the first ionisation energies are plotted against atomic number, the peaks are occupied Options (a) alkali metals (b) halogens…

7 years ago

Pauling's electro negativity values for elements are useful in predicting Options (a) Polarity of the molecules (b) Position in the…

7 years ago

Highest electron affinity is shown by Options (a) O⁻ (b) F⁻ (c) Cl₂ (d) F₂ Correct Answer: O⁻Explanation:Molecules of F₂,…

7 years ago

Which of the following has the highest electron affinity? Options (a) F⁻ (b) O⁻ (c) O (d) Na Correct Answer:…

7 years ago

The element, with atomic number 118, will be Options (a) alkali (b) noble gas (c) lanthanide (d) transition element Correct…

7 years ago

The ionisation energy of nitrogoen is more than that of oxygen because Options (a) nitrogen has half-filled p-orbitals (b) nitrogen…

7 years ago

Which of the following does not represent the correct order of the properties indicated Options (a) Ni²⁺> Cr²⁺> Fe²⁺> Mn²⁺(size)…

7 years ago

Which one of the following ionic species has the greatest proton affinity to form stable compound? Options (a) NH₂⁻ (b)…

7 years ago

Amongst the elements with following electronic configurations, which one of them may have the highest ionization energy? Options (a) Ne…

7 years ago