Answer:
Point of incidence: The point on the surface where the incident ray strikes the surface is called the point of incidence. Reflected ray: The ray of light that bounces back from the surface of an object is called a reflected ray of light.
Explanation:
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Density = Mass/Volume
d = .254/129.4
<span>Water can resist a greater external force than ethanol due to its greater surface tension.
Reason:
Surface Tension in liquids is caused by the cohesive forces among the molecules of liquids at the surface. Means the liquids molecules at the surface have a net attractive interactions with molecules beneath them and cause them to contract causing tension.
Now comparing water and ethanol, water has stronger intermolecular interactions than ethanol because water has two Hydrogen bongd donors (i.e. Hydrogens directly attached to oxygen atom) while ethanol has only one Hydrogen Bond Donors. This strong intermolecular interactions in water makes greater surface tension.</span>
The Geometry of PF₃Cl₂ is drawn below. The Fluoride atoms are at
Equatorial position while Chlorine atoms are at
Axial position. This overall geometry is called as
Trigonal Bipyrimidal. The
bond angles are as follow,
F--P--F =
120° Cl--P--Cl =
180° F--P--Cl =
90°
