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3 years ago

Why is atomic radi measured using the nuclues from 2 of the same atoms

Chemistry

1 answer:

irina1246 [14]3 years ago

3 0

Explanation:

Atomic radii is measured using the distance between nucleus of 2 atoms rather than the distance between the nucleus and outermost shell because:

- There is no clear/sharp boundary of the orbital. This is why it is called an electron cloud.

- Also, the exact location of the electron is not known. What is known is the probability of finding the electron there.

Due to this, it is not possible to measure the atomic radii precisely. That's why the distance between the nucleus of two atoms is used.

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A girl has a weight of 450 N and her feet have a total area of 300Cm2

snow_tiger [21]

Answer:

15000N/m²

Explanation:

Given parameters:

Force exerted by the girl = 450N

Area = 300cm²

Unknown:

Pressure exerted by her feet =?

Solution:

Pressure is the force per unit area on a body;

Pressure = $\frac{force }{area}$

We need to convert the given area to m²;

10000cm² = 1m²

300cm² = $\frac{300}{10000}$ = 0.03m²

Pressure = $\frac{450}{0.03}$ = 15000N/m²

8 0

3 years ago

HELP!!!!!!! How many moles of AgNO3 must react to form 0.854 mol Ag?<br> mol AgNO3

iris [78.8K]

There is 0.854 moles in AgNO3

4 0

3 years ago

Read 2 more answers

On a coordinate plane, which single transformation could map point A (3,-4) onto point A' (1.5,-2)? *

Ksenya-84 [330]

Answer: A dilation with rule: $(x,y)\to(\dfrac12x,\dfrac12y)$

Explanation:

A dilation is a non-rigid transformation that creates an image that is the same shape as the original but has a different size.

It uses a scale factor k such that

$(x,y)\to(kx,ky)$

(x,y)= coordinates of original figure

(kx,ky) = corresponding coordinate in the image.

To transform: A (3,-4) onto point A' (1.5,-2).

Using scale factor k= $\dfrac12$ , we have

$A(3,-4)\to A'(\dfrac12\times3, \dfrac12\times-4)=A'(1.5,-2)$

Required rule: $(x,y)\to(\dfrac12x,\dfrac12y)$

3 0

3 years ago

An evil villain wants to broadcast a message to everyone on Earth. They are using satellites for the communication process. For

stira [4]

Uhhhhhhh maybe the answer is 3

7 0

2 years ago

#PLATOFAM

Vsevolod [243]

Ketones and aldehydes are simple compounds that contain a carbonyl group (a carbon-oxygen double bond). They are considered "simple" because they do not have reactive groups like −OH or −Cl attached directly to the carbon atom in the carbonyl group, as in carboxylic acids containing −COOH<span>.

So your answer would be D.).

I hope that this helps. :)</span>

4 0

3 years ago

Read 2 more answers