write the anomalous properties of first p elements
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Anomalous behaviour of first element in the p-block elements is attributed to small size, large (charge/radius) ratio, high ionization enthapy, high electronegativity and unavailability of d-orbitals in its valance shell
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In p-block elements the first member of each group differs from the other elements of the corresponding group. The following factors are responsible for this anomalous behaviour. 1. Small size of the first member. 2. High ionisation enthalpy and high electronegativity. 3. Absence of d-orbitals in their valance shell. The first member of the group-13, boron is a metalloid while others are reactive metals. Moreover, boron shows diagonal relationship with silicon of group -14. The oxides of boron and silicon are similar in their acidic nature.Read more on Sarthaks.com - https://www.sarthaks.com/867887/write-a-short-note-on-anamolous-properties-of-the-first-element-of-p-block?show=867892#a867892