The first image shown at the left hand side is a pi bond. The other two images show sigma bonds.
In chemistry, a bond results from the overlap of atomic orbitals. This overlap may be end to end (sigma bond) or side by side (pi bond). Having said this, it is easier to decide whether the bonds in the image shown are sigma or bi bonds.
If we label the images; 1,2,3 from left to right, we can see that the overlap in image 1 is side by side. The electron density lies above and below the plane of the bond. This is a pi bond. In images 2 and 3, the overlap occurs in an end to end manner. This is a sigma bond.
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Answer:
Strong acid.....(A)
Explanation:
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Answer:
b. diamond
Explanation:
Diamond is the hardest known naturally occurring substance. And it will scratch any other minerals below it on the moh's scale of hardness.
- Fluorite is below diamond in the scale of hardness and it will readily scratch it.
- Talc, is the softest mineral, it will not scratch fluorite
- Both gypsum and calcite also below fluorite.
- They will not scratch this mineral.
The best and most correct answer among the choices provided by your question is the third choice or letter D.
<span>Solids, liquids, gases and plasma are all made of atoms.</span>
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Examples of Secondary Pollutants
Smog and acid rain are produced through similar sources, primarily vehicle and industry emissions. Though both result from human-caused air pollutants, there are chemical distinctions between the two.
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