Answer:
Based on these values and on consideration of molecular geometry, the H-Se bond can be considered almost _____non-polar___ and the molecule is __polar_____.
Explanation:
Looking at the difference in electro negativity of the two elements; hydrogen and selenium, one may be led to the conclusion that the molecule is nonpolar since the magnitude of electronegative between the two bonding atoms is minimal.
However, electro negativity difference alone is insufficient to determine the polarity of a molecule. The structure of the molecule is also considered. Based on the structure of the molecule, it is expected to have a dipole moment. Hence the molecule is polar.
Answer:
4.1 * 10^-22 J
The wave belongs to the infra red portion of the electromagnetic spectrum.
Explanation:
From the formula;
E = hc/λ
We know that;
h= plank's constant = 6.6 * 10^-34 Js
c= speed of light = 3 * 10^8 m/s
λ = wavelength of the wave = 4.80 x 10^5 nm or 4.80 x 10^-4 m
Hence;
E= 6.6 * 10^-34 * 3 * 10^8/ 4.80 x 10^-4
E= 4.1 * 10^-22 J
The wave belongs to the infra red portion of the electromagnetic spectrum.
Answer:
I believe the answer is B. Sometimes.
Explanation:
I think it's bromine and mercury.
