Answer:
I think the 1st pic, the 2nd one, and the 3rd one.
Explanation:
Hope this helps.
The correct answer is A.
B is incorrect because the C with the triple bond is shown also single bonded to two hydrogens and another C atom: That would give us a C with 12 bonds, which violates the octet rule.
C is incorrect because you have an sp3 carbon atom that has only two hydrogens, and so is short two bonds. This would be correct if either there were another H bonded to the carbon atom or if it formed a double bond with an adjacent carbon atom (an H would have to be removed from that adjacent carbon, however).
D is incorrect for the reason mentioned above: You have a C that is double-bonded to one C, and single-bonded to another C and two H atoms. This adds up to 10 bonds, violating the octet rule. This would be a correct structure if a hydrogen atom were removed from the middle carbon atom.
Answer: The correct option is option d
Explanation - The mean deal with science is that it allows people to carry on research in an organized manner to find or make new discoveries and inventions.
The basic purpose of science is to try new things or ways to get an outcome by constant perseverance on research and negating the ways that don't work thus giving and improving knowledge of what is correct and what is not to make a new Discovery or invention.
Answer:
When two negatively charged particles interact with one another, the particles repel with each other. Opposite charges attract while like charges repel. A negatively charged object will exert a repulsive force upon a second negatively charged object.
Explanation: