A particle with 12 electrons has a -2 charge. How many protons does it have.
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For, a atom in its neutral state has the same number of protons as electrons. Thatswhy, it has a neutral charge. The protons have a positive charge (1+); the elctrons have a negative charge(1-). So, the charges cancel out. Like, a atom has 11 electrons and 11 protons. See-
11 e- = -11
11 p+ = +11
Then,
And, if an atom has (2-) charge that means it has two extra electrons. Two more electron than the number of protons. It once had the same number of protons and electrons. Then two more electrons give it a (2-) charge. Thatswhy, if we subtract 2 from 12, we can get the number of protons.
We can calculate the number of protons as,
Okay, what's the proof? Want it?
We know there are 10 protons and 12 electrons. Let's see it.
Eureka! That's it. I got it. It's right.
AND ANOTHER QUESTION ARISES, If all atoms have the same number of protons and electrons then, when does the number of electron decrease or increase? How do the atoms come to have positive or negative charge?
Well, this happens because of ionic bonding. I can't explain all these stuff, right here. To obtain more information on bonding, search it on GOOGLE.
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Final Answer:
Three toxicants associated with sewage are heavy metals, organic pollutants, and pathogenic microorganisms.
Explanation:
1. Heavy Metals: Sewage can contain heavy metals such as lead, mercury, and cadmium, which are often discharged into wastewater from industrial processes and urban runoff. These toxic metals can contaminate water bodies, accumulate in aquatic ecosystems, and pose significant health risks to both aquatic life and humans when consumed through contaminated water or seafood.
2. Organic Pollutants:*Sewage also contains a variety of organic pollutants, including pesticides, solvents, and synthetic chemicals. These substances can originate from household products, industrial discharges, and agricultural runoff. Organic pollutants can have adverse effects on aquatic ecosystems by disrupting the balance of the ecosystem, affecting water quality, and harming aquatic organisms.
3. Pathogenic Microorganisms: Sewage is a potential carrier of pathogenic microorganisms such as bacteria, viruses, and parasites. When sewage is improperly treated or discharged into water bodies without adequate disinfection, it can lead to the contamination of drinking water sources and recreational waters, causing waterborne diseases and infections in humans.
Proper sewage treatment and wastewater management are essential to minimize the release of these toxicants into the environment and protect human health and aquatic ecosystems.
Learn more about organic pollutants
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Answer:
Pathogens,Heavy Metal and Organic Chemicals are all three toxicants associated with sewage
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high energy and unstable
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alpha decay because alpha particles have a large mass
beta decay because beta particles can have negative charge
alpha decay because alpha particles have two protons and two neutrons
gamma decay because gamma rays are photons
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The kind of decay which has occurred is: C. alpha decay because alpha particles have two protons and two neutrons.
What is an alpha decay?
An alpha decay refers to a type of radioactive decay in which the atomic nucleus of a radioactive element emits an alpha particle (two protons and two neutrons), thereby, producing chemical elements with a different atomic nucleus.
Basically, this isotope has a mass number that is decreased by four (4) and an atomic number (protons) that is decreased by two (2), which is an atom of Helium (He).
Read more on alpha decay here: brainly.com/question/23303931
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Answer:
behavioral observation scale
Explanation:
According to my research on different methods for providing feedback, I can say that based on the information provided within the question Joseph should use a behavioral observation scale. This feedback method measures the level of performance and frequency of certain behaviors. In this situation this feedback method would be the easiest and most accurate method of providing feedback.
**Even though no answer choices were provided this method is the most used in these types of situations.**
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