MCQ
The Lanthanoid contraction refers to:
- AVlence electrons of the Lanthanide series.
- BIonic radius of the series.
- CThe density of the series.
- DNuclear mass of the series.
Explanation:
Lanthanide contraction is a term used to describe the greater than expected decrease in ionic radii of the elements in the lanhtanide series from atomic number 57 i.e. lanthanum to 71 lutetium, which results in smaller than otherwise expected ionic radii for the subsequent elements starting with 72 i.e. hafnium.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$CH_3COOH + PCl_5 \longrightarrow (A)$ $\xrightarrow[(2){{H}_{2}}O]{(1)\,C{{H}_{3}}MgBr}\left( B \right)$ Product $B$ would be
$(1)$ Denaturation of proteins causes loss of secondary and tertiary structures of the protein.
$(2)$ Denaturation leads to the conversion of double strand of $DNA$ into single strand.
$(3)$ Denaturation affects primary structure which gets distorted.