AP EAMCET20227 Jul 2022Evening ShiftChemistryHydrogenActual
Match the following.
Options
- AA-(ii); B-(iii); C-(i); D-(iv)
- BA-(i); B-(iii); C-(iv); D-(ii)
- CA-(iv); B-(ii); C-(iii); D-(i)
- DA-(ii); B-(i); C-(iv); D-(iii)
Correct answer
B. A-(i); B-(iii); C-(iv); D-(ii)
Step-by-step solution
(C) Electron precise hydrides have the exact number of electrons needed to form covalent bonds. These are formed by group 14 elements such as CH ₄, SiH ₄ , etc. Therefore, A of list I matches with (i) of list II. Saline hydrides (also known as ionic hydrides) are compounds form between hydrogen and the most active metals, especially with the alkali and alkaline-earth metals such as MgH ₂ . Therefore, B of list I matches with (iii) of list II. The compounds in which the central atom has an incomplete octet are calle