The word that best fits is frequency. The sentence is The frequency of a wave is a measure of the amount of energy it carries. There is a direct relationship between frequency and energy of a wave. The constant of proportionality is h, Planck's constant. So, Energy = h * frequency. So, the answer is frequency.<span> Although you should know that wavelength is related to frequency and so it is also a measure of the amount of energy and it should also be other valid answer.</span>
The electronic configuration of thallium lll ion is 4F^14 5D^10 and it has a charge of +3.
Thallium is a chemical element with the chemical symbol TI. Its atomic number is 81 and the atomic mass is 204. The charge of +3 implies that, the element will give away three electrons during the course of chemical reaction in order to attain stability.
Answer:
8
Explanation:
there are two ammonium ions with four hydrogen atoms each.
4*2=8
Commercial agriculture can often lead to water-quality problems in the following ways:
- The washing of fertilizers and pesticides into water bodies from farms.
<h3>What is water quality?</h3>
Water quality refers to the state of a water body that encompasses it's physical, chemical and biological characteristics.
The water quality of a water body is crucial to its suitability for domestic or drinking purpose.
Commercial agriculture greatly affects water quality in the following ways:
- The washing of fertilizers and pesticides into water bodies from farms.
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This problem is asking for an explanation of what happens when an ionic bond is formed. Although the choices are not given in the question, one can find them on the attached file and realize the answer is C "a less electronegative atom donates an electron to a more electronegative atom" according to:
<h3>Types of bonds:</h3><h3 />
In chemistry, the forces that hold atoms together are known as chemical bonds and act like connections for atoms to form compounds. There exist ionic and covalent bonds, so the formers occur when electrons are thoroughly donated from the least electronegative atom to the most electronegative one.
On the flip side, covalent bonds occur when the electrons are shared between the two or more of the atoms forming the compound. In such a way, one can discard choices A and B because they are more related to covalent bonds.
Therefore, one can select C "a less electronegative atom donates an electron to a more electronegative atom" as the correct answer, because not all the elements are able to donate more than one single electron, and the less its valency, the more ionic the compound turns out to be.
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