Question

delta I H2 value of an element is more than its delta I H1 value. Give Reason​

Answer 1

Answer:

(a) The element V is the least reactive element as it has highest value of first ionization energy and positive electron gain enthalpy.

(b) The metal II is the most reactive metal. It has very low value of first ionization energy.

(c) The element III is the most reactive non metal. Its electron gain enthalpy is most negative.

(d) The element IV is the least reactive non metal as it has least negative electron gain enthalpy among the non metals.

(e) The metal VI can form a stable binary halide of the formula MX2 as it has lowest value of second ionization enthalpy.

(f) The metal I can form a stable MX halide

Answer 2

The first

and second

ionisation enthalpies

and the

electron gain enthalpy

of a few elements are given below: <br>

<br> Which of the above elements is likely to be <br> a. the least reactive element. <br> b. the most reactive metal. <br> c. the most reactive non-metal. <br> d. the least reactive non-metal. <br> e. the metal which can form a stable binary halide of the formula MX (X=halogen). <br> f. the metal which can form a predominantly stable covalent halide of the formula MX(X=halogen).

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