Answer:
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment. ... Protons and neutrons are bound together to form a nucleus by the nuclear force.
Explanation:
Answer:
Activation of the ring towards substitution: NH2, OCOCH3
Withdrawal of electrons through resonance. COOH, SO3H
Explanation:
During electrophilic substitution, certain substituents may activate or deactivate the benzene ring.
Substitients that activate or deactivate the benzene ring may do so via resonance or inductive effect.
Groups such as -NH2 and OCOCH3 activate the ring via resonance while groups such as -SO3H and -COOH deactivate the ring via resonance.
Answer:
Lowest: NF3, PBr3, NCl3: Highest
Explanation:
NCl3 is the highest because of the inoic bonds
PBr3 is higher than NF3 because of the larger molar mass.
It is, as all-stars are, a hot ball of gas made up mostly of Hydrogen. The Sun is so hot that most of the gas is plasma, the fourth state of matter.