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maria [59]
3 years ago
5

Every substance is either an element or a(n) _______. a compound is either _______ or ionic

Chemistry
1 answer:
irinina [24]3 years ago
3 0
1-compond
2-covalent
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<h2>Answer: Mg²⁺ & N³⁻</h2>

<h3>Explanation:</h3>

Magnesium (group IIA) loses two electrons to become a cation. This is the most energetically favorable way for Magnesium to obtain a valence electron that is stable (octet). When an atom loses electrons it has a positive charge that matches the number of electrons lost.

Nitrogen (group VA) gains three electrons to become an anion. This is the most energetically favorable way for Nitrogen to obtain a valence electron that is stable (octet). When an atom gains electrons it has a negative charge that matches the number of electrons gained.

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How much water must be added to 40.0 g of CaCl2 to produce a solution that is 35.0 wt% CaCl2?
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Answer:

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3 years ago
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They all vibrate, but they all move differently.

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4 years ago
What would make bromine, a group 17 element, more similar to a noble gas?
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never [62]
Number protons is what determines the element.
16 protons determines that the substance is sulphur.

The number of neutrons can vary according to the isotope.  The mass number is the total count of neutrons and protons, so sulphur with a mass number of 34 has 34-16=18 neutrons.

32.065 is the weighted average of the atomic weights of different isotopes, so does not apply to a single isotope.
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