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horsena [70]
3 years ago
6

What is the charge of the nucleus of every atom?

Chemistry
1 answer:
ohaa [14]3 years ago
7 0
The charge is neutral
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Propylethylene would be the answer

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How many grams of solute are needed to prepare a 3.50% mass/mass solution that has a solution mass of 2.50x102 grams.
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Which of the following is NOT the same?
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All are the same. It equals to the same thing.

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Answer is: a. Rubidium (Rb) is more reactive than strontium (Sr) because strontium atoms must lose more electrons.

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Rubidium electron configuration: ₃₇Rb 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶5s¹; one valence electron is 5s¹ orbital.

Strontium electron configuration: ₃₈Sr 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶5s²; two valence electrons is 5s² orbital.

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Answer:

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Explanation:

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