2 years ago

How many electrons should be in an atom’s valence shell (with the exception of hydrogen and helium) to become stable? 2 4 6 8.

Physics

1 answer:

podryga [215]2 years ago

4 0

Answer:

Explanation:

octet rule: Atoms lose, gain, or share electrons in order to have a full valence shell of eight electrons. Hydrogen is an exception because it can hold a maximum of two electrons in its valence level.

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3 years ago

The cheetah is one of the fastest-accelerating animals, because it can go from rest to 19.6 m/s (about 44 mi/h) in 2.9 s. If its

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Answer:

a)P =14288.4 W

b)P = 19.16 horsepower

Explanation:

Given that

m= 108 kg

Initial velocity ,u= 0 m/s

Final velocity ,v= 19.6 m/s

t= 2.9 s

Lets take acceleration of Cheetah is a m/s²

We know that

v= u + a t

19.6 = 0 + a x 2.9

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P =14288.4 W

We know that

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3 years ago

On an asteroid, the density of dust particles at a height of 3 cm is ~30% of its value just above the surface of the asteroid. A

melisa1 [442]

Answer:

g = $0.1m/s^2$

Explanation:

From the law of atmosphere

$Nv(y) = n0*e^(-mgy/Kb*T)$

<u>Given:</u>

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Mass M = 10^-19 kg

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