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IgorLugansk [536]
2 years ago
11

What is the electron configuration of an element with atomic number 20? A. 1s2 2s2 2p6 3s2 3p5 B. 1s2 2s2 2p6 3s2 3p6 C. 1s2 2s2

2p6 3s2 D. 1s2 2s2 2p6 3s2 3p6 4s2 E. 1s2 2s2 2p6
Biology
1 answer:
zubka84 [21]2 years ago
6 0

Answer:

electron configuration is 2,8,8,2

Explanation:

1s2 2s2 2p6 3s2 3p6 4s2

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Answer: I think its centriole

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2 years ago
In which muscles is overactivity or tightness common for individuals who regularly wear high heels?
frozen [14]

Answer: Gastrocnemius, soleus, and Achilles tendon

Explanation:  

The heel cord or achilles tendon is also known as calcaneal tendon is found at the back of the leg and is known to be the thickest bone in the human body.

It is attached to the plantaris, calf muscles (gastrocnemius) and soleus muscles. A person who wears heels regularly for a longer period of time suffers from pain and inflammation in muscles of leg.

These muscles helps in the walking and other movements of the legs. Wearing heals and walking is quite painful.

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3 years ago
What is the stuff between bones in a joint?
igor_vitrenko [27]
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3 years ago
Why are there no samples of rocks from the early Precambrian era?
xenn [34]

Answer:

The correct answer is -  D. All rocks were molten in that time period.

Explanation:

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Due to the molten rocks, there are no samples of rock from this area as it was too hot to be formed. There were boiling sulfur and gases were everywhere.

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2 years ago
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Answer:

Friction depends on the coefficient of friction which in turn depends upon the nature of the surface. Hence, this statement

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3 0
3 years ago
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