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chrisraptorofficial
21.11.2019 •
Chemistry
Lanets formed from left over from the formation of the sun at the center of the cloud. a. gravel c. solar wind b. gas, ice, and dust d. asteroids
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Ответ:
The answer is B, gas,ice, and dust :) yw
Explanation:
Ответ:
beryllium-10
Explanation:
An isotope is an atom of the same element that has a different number of neutrons.
This means that an isotope of beryllium (Be) would have to be beryllium as well.
The number 10 references the fact that it has four protons and six neutrons:
4 protons + 6 neutrons = 10
While usually the element has 5 neutrons, so it is beryllium-9.