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What is the point group and symmetry element of CHCl3?
The point group of CHCl3 is C3v, which contains three C3 rotational axes and three perpendicular mirror planes. The symmetry element is a C3 rotation axis passing through the carbon atom and three perpendicular mirror planes that contain the carbon atom.
When ammonia reaches its freezing point what will happen?
It forms a white crystalline mass. Ammonia freezes at -107 degrees C.
What Is the flash point of ammonia?
Flash point for ammonia is the point where it becomes flammable after a phase change from a liquid to gas forming a flammable mixture in air. Obviously this is different to the lowest flammable concentration in air. In the case of ammonia it is 11 degrees according to the MSDS: http://msds.chem.ox.ac.uk/AM/ammonia_anhydrous.html
Why is melting point of ammonia lower than water?
The melting point of a substance is based upon the polarity of the bonds that make up the substance. In water, the O-H bond has a difference in electronegativity of 1.4 (Pauling's Scale) and in ammonia, the N-H bond has a difference in electronegativity of .9. Therefore, it takes more energy to break apart the O-H bond because the polarity is so great, and this is why it has a higher melting point than ammonia.
Why does ammonia have an unusually high boiling point?
Ammonia has an unusually high boiling point compared to other molecules of similar size because it forms strong hydrogen bonds, which require more energy to break. These hydrogen bonds create a network of intermolecular forces that hold the ammonia molecules together, resulting in a higher boiling point.
What is the point group symmetry of a basketball?
D3h
How do you assign point group?
To assign a point group to a molecule, you first identify its symmetry elements such as rotation axes, mirror planes, and inversion centers. Then, use those elements to determine the point group using crystallographic tables or software. The resulting point group describes the overall symmetry of the molecule.
What is point group Dn?
Point group D_n is a type of symmetry group in chemistry and crystallography. It has a 2-fold rotational axis with n total symmetry elements, including reflections and rotations. The "D" indicates that there are perpendicular C2 axes in the group.
What is the point group of CH2Cl2?
The Cs point group only has one symmetry plane. Cl2CH2 has two symmetry planes and one C2 axis. The mirror plane is perpendicular to the rotation axis, so this makes the point group C2h.
What is the significance of the octahedral point group in crystallography and how does it affect the symmetry and properties of crystals?
The octahedral point group is significant in crystallography because it represents a high degree of symmetry in crystals. Crystals with octahedral symmetry have eight-fold rotational symmetry, which affects their physical and chemical properties. This symmetry leads to unique optical, electrical, and mechanical properties in crystals, making them important in various scientific and industrial applications.
What is a point of symmetry and a line containing that point?
It is a line through the point of symmetry. In general it is not an axis of symmetry.
What is a figure that has point symmetry but not line symmetry?
The letters S and N have point symmetry but not line symmetry.
What is the point group of ammonia bonded to a metal ion or metal complex?
You are thinking of the ammonium radical, NH4-.
When an image has a point of symmetry then the line containing that point will be a line of symmetry?
false
What is the meaning of melting point of ammonia and boiling point of ammonia?
The meaning is at what temperature does ammonia melt at and what temperature does ammonia boil at? for eg. waters melting point is 0 degrees celcius and the boiling point of water is 100 degrees celsius
When an image has a point of symmetry then any line containing that point will be a line of symmetry?
False
What has 2 lines of symmetry and no point symmetry?
rectangle
