In chemistry Electronic configuration, also called electronic structure, the arrangement of electrons in energy levels around an atomic nucleus. According to the older shell atomic model, electrons occupy several levels from the first shell nearest the nucleus, K, through the seventh shell, Q, farthest from the nucleus.
Hopefully this helps!!
Answer:
<em>Hi Todoroki here!!! </em>
Explanation:
Chlorine has the electron configuration [Ne]3s 2 3p 5, with the seven electrons in the third and outermost shell acting as its valence electrons. Like all halogens, it is thus one electron short of a full octet, and is hence a strong oxidising agent, reacting with many elements in order to complete its outer shell.
<em>Your welcome!!</em>
Answer:
One nucleophilic center
Explanation;
Nucleophile:
Nucleophile is a substance which is nucleus loving in nature (<em>Nucleo</em>; Nucleus , <em>phile</em>; Loving). It is known as a specie which donates a lone pair of electrons to electrophile (electron loving) in a chemical reaction.
Thus, Nucleophile is the region of higher electron density in a molecule and attacks on the lower electron density region of another molecule. Also, the nucleophile can also contain a negative charge.
Number of Nucleophilic centers in Methanol:
The chemical structure of Methanol is attached below and it can be observed that the oxygen atom is containing two lone pair of electrons. Hence, the oxygen atom can act as a nucleophilic center. Therefore, there is only one nucleophilic center in methanol.
H₃C-OH + H₃C-Br → H₃C-O-CH₃ + HBr
In above reaction methanol is acting as a nucleophile and is attacking on electrophilic center (Carbon) of methyl bromide yielding dimethyl ether.
Freshwater ecosystem type is the factor that does not determine the strength of a toxic in an aquatic ecosystem.
- A toxin is a substance which is responsible for causing detrimental effects on the body of the living organisms.
- The excess dose of toxin can produce lethal effects in living beings.
- The strength of the toxin is determined by its amount or concentration in the water body more the amount or concentration of toxin the more will be its strength.
- The strength of toxin can be determined by its absorption in the aquatic organisms like gills of fishes more the absorption more will be the strength and more will be the impact.
- The strength of toxin can also be determined by the mutation it can cause more the number of mutation it can cause more lethal will be the effect.
- The freshwater ecosystem is a source of freshwater which will be free from saline water. It can be a river, lake, pond, or others.
- It does not matter which type of freshwater ecosystem is affected by the toxin. If the toxin is able to mix with the water then it can be absorbed by the aquatic organisms and the toxin will exert its negative effects.
- Hence, freshwater ecosystem type is the correct option.
Learn more about toxin:
brainly.com/question/24174409
The pH will start high and decrease, as opposed to starting low in increasing, but the buffer region is still at the beginning and the equivalence point is still in the middle.
<h3>What is weak acid?</h3>
Corrosive strength is the propensity of a corrosive, represented by the synthetic recipe HA, to separate into a proton, H+, and an anion. Powerless acids don't totally separate into their particles in water. For instance, HF separates into the H + and F - particles in water, yet some HF stays in arrangement, so it's anything but a solid corrosive. There are a lot more powerless acids than solid acids. Most natural acids are feeble acids. A feeble corrosive isn't totally ionized in arrangement. For instance, hydrofluoric corrosive, HF, is a feeble corrosive. At the point when broken up in water, HF particle exist in balance with H +, which responds with water to shape hydronium, and F - particles. Since the corrosive doesn't totally separate into its ionic parts, it is a frail corrosive.
Learn more about weak acid, visit
brainly.com/question/9091286
#SPJ4
