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Juliette [100K]
3 years ago
8

What is classification? write its two importance. In chemistry

Chemistry
1 answer:
IrinaVladis [17]3 years ago
3 0

Answer:

Classification of elements in groups provide us with a fixed pattern in which the elements change their properties periodically. Periodic table made the study of physical and chemical properties of elements simple and organized.It is also necessary to understand how they form the compounds.

Explanation:

hope it help u make me a brainlist please.....

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I need help pls and thank you
nydimaria [60]
It’s 1 mark k/u thanks
3 0
3 years ago
4. Is the ketone oxidized or reduced during this reaction and how can you tell?
Lady_Fox [76]
The answer will be a
3 0
3 years ago
When the excited electron in a hydrogen atom falls from to , a photon of blue light is emitted. If an excited electron in falls
Dima020 [189]

Answer:

n = 3 for similar blue light

Explanation:

The principle applied here is energy levels and energy changes. There are different energy levels depending on the value of the integer as explained by Max planck - a german physicist in 1900, Max planck claimed that electrons in an atom were presumed to be oscillating with a frequency f, then there enrrgy will be given by the plancks equation ; E =hf, where h is the plancks constant.

In general energy of each level can be written as E =nhf

3 0
3 years ago
Which type of species distribution pattern might require collaboration between different countries for effective preservation?
Zolol [24]

Answer:

migratory distribution

Explanation: The pattern of migratory distribution of species may require collaboration between different countries for effective preservation. This is because species migration can make them enter different territories, which will need to provide an effective level of preservation for species survival

4 0
3 years ago
Which would you expect to have higher enthalpy of fusion, N2 or I2? Explain your choice.
r-ruslan [8.4K]
The enthalpy of fusion of a substance is the energy required to change the state of a substance from solid to liquid at a constant temperature. The enthalpy of fusion for iodine, I₂, will be higher. This is because there are stronger intermolecular forces holding the iodine molecules together. The stronger intermolecular forces arise from the fact that iodine is a much larger molecule, so it has much more electrons resulting in higher Van der Waal's forces. This is also visible in the fact that at room temperature, iodine is a solid while nitrogen is a gas.<span />
5 0
3 years ago
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