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3 years ago

How many quantum numbers are needed to describe the energy state of an electron in an atom?

1 answer:

8 0

There are a total of four<span> quantum numbers needed:

1) The principal quantum number (n),
2) The orbital angular momentum quantum number (l),
3) The magnetic quantum number (m</span>l),
4) The electron spin quantum number (ms)

Hope this helps!

You might be interested in

A 47.2 kg girl is standing on a 177 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat,

Softa [21]

Answer:

v_g,i = 1.208 m/s

Explanation:

We are given;

Mass of girl; m_g = 47.2 kg

Mass of plank; m_p = 177 kg

Let the velocity of girl to ice be v_g,i

Let the velocity of plank to ice be v_p,i

Since the velocity of the girl is 1.53 m/s relative to the plank, then;

v_g,i + v_p,i = 1.53

From conservation of momentum;

m_g × v_g,i = m_p × v_p,i

Thus;

47.2(v_g,i) = 177(v_p,i)

Dividing both sides by 47.2 gives;

v_g,i = 3.75(v_p,i)

v_pi = (v_g,i)/3.75

Thus, from v_g,i + v_p,i = 1.53, we have;

v_g,i + ((v_g,i)/3.75) = 1.53

v_g,i(1 + 1/3.75) = 1.53

1.267v_g,i = 1.53

v_g,i = 1.53/1.267

v_g,i = 1.208 m/s

5 0

3 years ago

The_____ form acidic compounds with hydrogen.

dsp73

Chlorine forms hydrochloric acid when reacted with hydrogen

7 0

2 years ago

Read 2 more answers

PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (40pts)

Soloha48 [4]

Answer:

Newton's second law: F=ma.

Force = mass x acceleration

This basically means, that the more massive something is, and the faster it is going, the more force the object will have.

So, the factors that can be used to find acceleration are:

F=ma

a=F/m

So, we see that the correct answer is A, mass and force.

Let me know if this helps!

8 0

2 years ago

A person travels by car from Tucson to Phoenix at a constant speed of 75 km/hr. They then return from Phoenix to Tucson at a con

kompoz [17]

Answer:

$v=0$

Explanation:

Knowing that the formula for average velocity is:

$v=\frac{x_{2}-x_{1}}{t_{2}-t_{1}}$

Being said that, we know that the person's displacement is zero because it returns to its starting point

$x_{2}=x_{1}$

That means $x_{2}-x_{1}=0$

$v=\frac{0}{t_{2}-t_{1}}=0$

7 0

3 years ago

A circular conical reservoir has depth 20 feet and radius of the top 10 feet. water is leaking out so that the surface is fallin

levacccp [35]

As per given condition we know that vertex angle of the cone is given as

$tan\theta = \frac{R}{H}$

so here we can say that vertex angle will remain constant

so here

$\frac{r}{y} = \frac{R}{H}$

$\frac{r}{8} = \frac{10}{20}$

$r = 4 feet$

now for the volume we can say

$V = \frac{1}{3}\pi r^2 y$

also we can say

$r = \frac{y}{2}$

so here we will have

$V = \frac{1}{3}\pi (\frac{y}{2})^2y = \frac{1}{12}\pi y^3$

now for volume flow rate

$Q = \frac{dV}{dt} = \frac{3}{12}\pi y^2\frac{dy}{dt}$

$Q = \frac{1}{4}\pi y^2 v_y$

now plug in all data

$Q = \frac{1}{4} \pi (8)^2 (12) ft^3/h$

$Q = 603.2 ft^3/h$

4 0

2 years ago