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2 years ago

The octet rule states that in chemical compounds atoms tend to have

Physics

2 answers:

fomenos2 years ago

7 0

Answer:

<em>The octet rule states that atoms tend to form compounds in ways that give them eight valence electrons just like the electron configuration or valency of a noble gas</em>

Explanation: The Octet rule tend to show that Atoms prefer to fill up the eight valence electron in order to make their shell complete to achieve the valency of the Noble gases.

Helium is an exception to the Octet rule as it only has two valence electrons in its outermost shell.

Sharing of electrons which is one of the characteristics of a Octet rule in trying to achieve covalent bonding makes the compound formed more stable.

Marrrta [24]2 years ago

4 0

Answer:

In chemical compounds, atoms tends to have the electron configuration of a noble gas.

Explanation:

The noble gases are unreactive because of their electron configurations. This noble gas neon has the electron configuration of 1s22s22p6 . It has a full outer shell and cannot incorporate any more electrons into the valence shell.

The octet rule states that atoms tend to form compounds in ways that give them eight valence electrons and thus the electron configuration of a noble gas. An exception to an octet of electrons is in the case of the first noble gas, helium, which only has two valence electrons.

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Approximately what core temperature is required before hydrogen fusion can begin in a star?

valkas [14]

Answer:

The temperature required is near about 3 million kelvin

Explanation:

The brilliance of the star results from the nuclear reaction that take place in the core of the star and radiate a huge amount of thermal energy resulting from the fusion of hydrogen into helium.

For this reaction to take place, the temperature of the star's core must be near about 3 million kelvin.

The hydrogen atoms collide and starts and the energy from the collision results in the heating of the gas cloud. As the temperature comes to near about $1.5\times 10^{7 {\circ}C$ , the nuclear fusion reaction takes place in the core of the gas cloud.

The huge amount of thermal energy from the nuclear reaction gives the gas cloud a brilliance resulting in a protostar.

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2 years ago

How does the height of a ramp affect the distance that a toy car will travel?

lyudmila [28]

Answer:

the higher the ramp the less distance it will travel

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2 years ago

At a point 1.2 m out from the hinge, 14.0 N force is exerted at an angle of 27 degrees to the moment arm in a plane which is per

geniusboy [140]

Answer:

$\tau = 7.63 Nm$

Explanation:

As we know that moment of force is given as

$\tau = \vec r \times \vec F$

now we have

$\vec r = 1.2 m$

$\vec F = 14 N$

now from above formula we have

$\tau = r F sin\theta$

here we know that

$\theta = 27 degree$

so we have

$\tau = (1.2)(14) sin27$

$\tau = 7.63 Nm$

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2 years ago

Will mark brainliest. TRUE OR FALSE. the acceleration due to gravity is caused by a field force

choli [55]

Answer:

Yes, It is true.

The acceleration due to gravity is caused by field force.

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1 year ago

When is the pressure of the man on the ground more – lying position or standing

Wittaler [7]

Hi,

<u>The man on the ground in standing position has more pressure</u>. This is because when he stands, only his legs are in contact with the ground. While lying, his body is more in contact with the ground, therefore, he exerts less pressure.

To the point, a man standing position on the ground had more pressure.

More is the area of contact, less is the pressure efforted.

Thank you...

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2 years ago