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anzhelika [568]
3 years ago
6

How many protons does calcium have?​

Chemistry
2 answers:
Irina-Kira [14]3 years ago
6 0

calcium has 20 protons

aliya0001 [1]3 years ago
5 0
Calcium has 20 protons.
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A. They are the most destructive earthquake waves.

D. They can move in a rolling pattern through rock, like an ocean  wave.

Explanation:

Surface waves are seismic waves that cause the most destruction during an earthquake.

Rayleigh waves are known to cause rolling pattern of rocks just like an ocean waves.

  • Seismic waves are elastic waves that notably transmits energy.
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  • Love waves travels laterally in a horizontal fashion.
  • Rayleigh waves rolls like ocean waves in the ground.
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learn more:

Seismograph brainly.com/question/11292835

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3 years ago
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AveGali [126]

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2 years ago
What do we know about elements with half-filled energy levels??
lisabon 2012 [21]
If the energy level of a certain element is filled based on the maximum number of allowable electrons per level, then it is no longer reactive. With this, half-filled energy level means that the element may retain those electrons and attract electrons from other elements or it may give off its electrons. 
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Can anyone help me with this?:(
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