Answer:They are movement, nutrition, respiration, sensitivity, reproduction, excretion,and growth.
Explanation:
Answer:
KBr
Explanation
KBr is an ionic compound which have very high BP since they exist as 3D crystals
Methyl Bromide, CH3Br. is a covalent compound which have low BP since they exist as individual molecules
Answer:
![\\_{2}^{4} \alpha](https://tex.z-dn.net/?f=%5C%5C_%7B2%7D%5E%7B4%7D%20%5Calpha)
Explanation:
In this question, we wish to find the missing nuclei for the equation:
![\\_{92}^{238} U\rightarrow _{90}^{234} Th + _{Z}^{A} X](https://tex.z-dn.net/?f=%5C%5C_%7B92%7D%5E%7B238%7D%20U%5Crightarrow%20_%7B90%7D%5E%7B234%7D%20Th%20%2B%20_%7BZ%7D%5E%7BA%7D%20X)
In order to find the missing species, we need to use the charge and mass balance law. That is, the mass should be conserved: the total mass on the left-hand side with respect to the arrow should be equal to the total mass on the right-hand side with respect to the arrow:
![238 = 234 + A](https://tex.z-dn.net/?f=238%20%3D%20234%20%2B%20A)
Notice from here that:
![A = 238 - 234 = 4](https://tex.z-dn.net/?f=A%20%3D%20238%20-%20234%20%3D%204)
So far we know that the mass of X is 4. Similarly, we apply the law of charge conservation. The total charge should be conserved:
![92=90+Z](https://tex.z-dn.net/?f=92%3D90%2BZ)
From here:
![Z = 92-90=2](https://tex.z-dn.net/?f=Z%20%3D%2092-90%3D2)
We have a particle:
![\\_{2}^{4} X](https://tex.z-dn.net/?f=%5C%5C_%7B2%7D%5E%7B4%7D%20X)
Looking at the periodic table, an atom with Z = 2 corresponds to helium. This can also be written as an alpha particle:
![\\_{2}^{4} \alpha](https://tex.z-dn.net/?f=%5C%5C_%7B2%7D%5E%7B4%7D%20%5Calpha)
the minimum frequency of radiation that will produce a photoelectric effect
<h2>#CarryOnLearning</h2>
Symbol "X" represents Nitrogen, phosphorus, and arsenic.as they have five valence electrons in their valance shell.
<h3>What is a Lewis notation?</h3>
A Lewis form is a completely simplified illustration of the valence shell electrons in a molecule. it's miles used to expose how the electrons are organized round man or woman atoms in a molecule. Electrons are proven as dots or for bonding electrons as a line between the 2 atoms.
Lewis systems, also known as electron-dot structures or electron-dot diagrams, are diagrams that show the bonding between atoms of a molecule, and the lone pairs of electrons that can exist within the molecule.A Lewis form is based totally at the idea of the octet rule, wherein atoms percentage electrons in order that every atom has 8 electrons in its outer shell. for example, an oxygen atom has six electrons in its outer shell.
Learn more about valence electrons :-brainly.com/question/371590
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