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3 years ago

Which of the following colors of light has the highest energy?

Chemistry

2 answers:

qaws [65]3 years ago

5 0

I believe the answer is red, they have the longest wavelength, and energy.
Hope this helps

devlian [24]3 years ago

5 0

Violet has the highest energy (aka frequency) of all visible light. It is just below ultraviolet (UV) which is invisible.
Frequency is indirectly proportional to wavelength, so higher the energy lowest the wavelength.

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When an atom is in the ground state what must happen for the atom to be in an excited state? what must happen for this atom to r

scoray [572]

Hi there

In order for an electron to jump into a higher energy state, it must first absorb energy (heat, light, etc).

When an electron goes back down to the ground state from the excited state, it emits energy usually in the form of a photon.

i hope this helps

4 0

2 years ago

19. When an atom of iron loses all of its 4s electrons and one of its 3d electrons, what is its charge?

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2 years ago

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Sam read that all subsystems interact with each other. Which example shows how changes in the cryosphere can affect the geospher

Dmitry_Shevchenko [17]

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3 years ago

The following list contains some common radicals. Using the charges on these ions and the idea of valence, predict the formulas

lesantik [10]

Answer : The formula for the compound sodium carbonate is $Na_2CO_3$

The formula for the compound potassium permanganate is $KMnO_4$

Explanation :

For formation of a neutral ionic compound, the charges on cation and anion must be balanced.

The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non-metals.

(a) Sodium carbonate

In the compound, the sodium metal forms an ionic compound with polyatomic anion (carbonate) $CO_3^{2-}$ .

Here, sodium is having an oxidation state of +1 called as $Na^{1+}$ cation and carbonate $CO_3^{2-}$ is an anion with oxidation state of -2. The charges are not balanced. So, the charges are balanced by the cris-cross method. Thus, the compound formed will be, $Na_2CO_3$

Hence, the formula for the compound sodium carbonate is $Na_2CO_3$

(b) Potassium permanganate

In the compound, the potassium metal forms an ionic compound with polyatomic anion (permanganate) $MnO_4^{1-}$ .

Here, potassium is having an oxidation state of +1 called as $K^{1+}$ cation and permanganate $MnO_4^{1-}$ is an anion with oxidation state of -1. The charges are balanced. Thus, the compound formed will be, $KMnO_4$

Hence, the formula for the compound potassium permanganate is $KMnO_4$

3 0

3 years ago