Answer:
i think its b.c but I'm not sure
Answer:
The wavelength of the light passing through it. (Ans B).
Explanation:
The refractive index of a substance is defined as the ratio of the speed of the light present in the vacuum to the speed in the medium. Refractive index of a substance is called as a dimensionless number that helps to describe how fast light will travel through the substance. It is described as:
N = C/V,
Where C is known for the speed of the light in vacuum, and V is known as the phase velocity of light which is found in medium.
Answer:
See explanation
Explanation:
XeF4 has a square planar structure. There are six electron pairs on the valence shell of the central atom. This gives rise to an octahedral geometry based on valence shell electron pair repulsion theory.
There are two lone pairs of electrons present on the central atom, hence the four bond pairs are found to occupy the corners of a square thereby giving a square planar compound. The two lone pairs are found above and blow the plane of the square.
Atoms which might substitute for one another can be found in the same column in the periodic table.
So, since Si and C are found in the same column, they can substitute each other.
1. Si = C
2. K = Na
3. Nb = V
4. Cu = Ag
5. P = As
6. Mg = Ca