A for the first and b for the second!!:))
Octahedral is the geometry of the complex ion which has d2sp3 hybridization.
The octahedral has eight faces hence the prefix octa. Octahedral molecular geometry describe the shape of compound with six atom or groups of atoms or ligands symmetrically arranged around a central atom.The octahedron is one of the platonic solids.
Solution :
Given :
Amount of anserine solution = 0.200 M
pH value is = 7.20
Preparation of 0.04 M solution of anserine from the 0.2 M solution.
0.2 M x
= 0.04 M x 1000 ml
= 200 ml
So the 200 ml of 0.2 M anserine solution is required to prepare0.04 M of anserine.
0.1 M x
= 0.04 x 1000 ml
= 400 ml
Therefore, 400 ml of HCl is needed.
In order to compare the two elements, one must take note of
its placement in the periodic table. As you go down a group in the periodic
table, the metallic property increases. Thus in the problem, Antimony has a
more metallic behavior than Arsenic so that already crosses out statement A and
B from the choices since it is untrue. The number of electron shells meanwhile
decreases as you go down the group. Therefore the answer would be Arsenic has a
more nonmetallic behavior than antimony because arsenic’s atoms have fewer
electron shells.
HOPE THIS HELPS
Answer:
The table compares making ethanol by hydration of ethene (ethene and steam) to making ethanol by fermentation (sugar from plant material).