Answer:
Explanation:
While a single σ (sigma) bond is free to rotate, double and triple bonds are rigid because of their π (pi) bonds. ... While a triple bond is the strongest type of bond, it is not three times stronger than a single bond because pi bonds are weaker than sigma bonds.
Answer: A
Explanation:
9 protons correspond to fluorine.
- The first model shows 9 electrons, so the charge is neutral and is thus a fluorine atom.
- The second model shows 10 electrons, so the charge is -1, meaning is a fluoride ion.
Explanation:
The reaction forms calcium hydroxide, Ca(OH)2 and hydrogen gas (H2). The calcium metal sinks in water and after an hour or so bubbles of hydrogen are evident, stuck to the surface of the metal.