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3 years ago

What elements are the most reactive

2 answers:

4 0

Halogens are the most reactive elements. Halogens include: <span>fluorine, chlorine, bromine, iodine, and astatine</span>

torisob [31]3 years ago

3 0

Among all the elements on periodic table, Halogen (17th group) elements are most reactive 'cause of high electronegativity. & among all of them, "Fluorine" is most reactive.

In short, Your Answer would be "Halogens"

Hope this helps!

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Velocity can best be described by which of the following statements?

pogonyaev

Answer: Velocity can best be described as, the speed in a given direction.

Explanation: To find the answer, we need to know more about the Velocity of a body.

<h3>What is Velocity of a body?</h3>

Velocity is the rate of change of displacement.
It's a vector quantity and is measured in m/s.
It can be positive, negative or zero.
A body is said to be in uniform motion, then its velocity remains constant.
Change in velocity can be a change in speed.
The magnitude of velocity is less than or equal to speed.

Thus, we can conclude that, the option C is best describing velocity.

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8 0

2 years ago

Read 2 more answers

What is the energy of a photon with a frequency of 1.14 x 10^34 Hz? Remember that Planck's constant is 6.63 x 10^-34 Js. Round y

suter [353]

Answer:

7.56 Hz

Explanation:

6.63E-34 x 1.14E34 = 7.5582

6 0

3 years ago

At a certain location, Earth's magnetic field of 34 µT is horizontal and directed due north. Suppose the net field is zero exact

zheka24 [161]

Answer:

a) I = 13.77 A

b) 0 ° or to the East

Explanation:

Part a

The magnetic field by properties would be 0 at the radius on this case r =8.1 cm.Analyzing the situation the wirde would produce a magnetic field equals in magnitude to the magnetic field on Earth by with the inverse direction.

The formula for the magnetic field due to a wire with current is:

$B = \frac{\mu_0 I}{2 \pi r}$

In order to have a value of 0 for the magnetic field at the radius then we need to have this balance

B (r=8.1) = B (Earth)

Replacing:

$B = \frac{\mu_0 I}{2 \pi r)}= B_{Earth}$

Solving from I, from the last equation we got:

$I = \frac{2 \pi r B_{earth}}{\mu_0}$

$I=\frac{2 \pi 0.081 m (34 x 10^{-6} T)}{4 \pi x 10^{-7} Tm/A}$ = 13.77 A

Part b

We can use the right hand rule for this case.

The magnetic field of the wire would point to the South, because the magnetic field of the earth given points to the North. Based on this the current need's to flow from West to East in order to create a magnetic field pointing to the south, because the current would be perpendicular to the magnetic field created.

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3 years ago

How does a balanced Chemical Equation Satisfy the Law of Conservation of Mass?

andriy [413]

<h3>During a chemical reaction,one ore more new substances forwed</h3>

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3 years ago

What experimental evidence led to the development of this atomic model from the one before it?

Inga [223]

A few of the positive particles aimed at a gold foil seemed to bounce back off of the thin metallic foil. so, the correct answer is option A.

<h3>What is the Rutherford experiment?</h3>

Rutherford performed an experiment in which alpha particles are bombarded on the gold foil.

Some of the particles bounced back which indicates that there are heavy particles present in the center of an atom.

Most alpha particles pass through the atom which indicates that there is a lot of empty space in an atom.

A few of the positive particles aimed at a gold foil seemed to bounce back off of the thin metallic foil. so, the correct answer is option A.

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2 years ago