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3 years ago

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What is the difference between an anion and a cation

1 answer:

Svetlanka [38]3 years ago

7 0

Cations and anions are both ions. The difference between a cation and an anion is the net electrical charge of the ion. Ions are atoms or molecules which have gained or lost one or more valencee electron giving the ion a net positive or negative charge. Cations are ions with a net positive charge.

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Get this scenario

Ilia_Sergeevich [38]

Lol. It is now a solution and not really inseparable, so your only logical option would be to throw it away and try again.

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4 years ago

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Determine the end (final) value of n in a hydrogen atom transition, if the electron starts in and the atom emits a photon of lig

Usimov [2.4K]

Complete Question

Determine the end (final) value of n in a hydrogen atom transition, if the electron starts in n=4 and the atom emits a photon of light with a wavelength of 486 nm. Group of answer choices

Answer:

$n=2$

Explanation:

From the question we are told that:

Wavelength $\lambda=486nm=>486*10^{-9}$

Generally the equation for Atom Transition is mathematically given by

$\frac{1}{\lambda}=R_{\infty }(\frac{1}{n_1^2}-\frac{1}{n_2^2})$

Where

Rydberg constant $R_{\infty}=1.097*10^7$

Therefore

$\frac{1}{486*10^{-9}}=1.097*10^7*(\frac{1}{n_1^2}-\frac{1}{4^2})$

$(\frac{1}{n_1^2}-\frac{1}{4^2})=\frac{1}{486*10^{-9}*1.097*10^7}$

$n_1^2=3.98$

$n=1.99$

$n=2$

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3 years ago

What is the frequency of the sinusoidal graph?

Arisa [49]

Answer:

For finding frequency, we need to first find the period of the graph.

The period of a sinusoidal graph is the time interval in which it repeats its pattern.

In the graph, we can see, after $1/period$ time, it repeats its pattern.

Hence the period of the graph is $\pi /2$ .

Now we need to find its frequency $1/\pi /2$

The formula for frequency is $2/\pi$

This is the answer

i hope you pass the assignment

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High melting point.

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Vesna [10]

Answer:

the answer is 1,3,2

Explanation:

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