Question

The graph of first ionization enthalpy versus atomic number as follows:
Which of the following statement is correct?

• A. Alkali metals are at the maxima and noble gases at the minima
• B. Noble gases are at the maxima and akali metals at the minima
• C. Transition elements are at the maxima
• D. Minima and maxima do not show any regular behaviour

Answer 1

The correct option is B Noble gases are at the maxima and akali metals at the minima

In a period, alkali metals have the lowest ionization energy and noble gases have the highest ionization energy.