Valence electrons in their outer shell
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I believe the correct answers from the choices listed above are the first two options. The molecules O2- and F2+ are <span>expected to have one unpaired electron. This can be determined by looking at the value of the charge. Hope this answers the question.</span>
The answer is (d)
Electrons are outside the nuclues in energy levels. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. A neutral atom contains equal numbers of protons and electrons
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Answer:
Explanation:
A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.
The balanced reaction between aqueous calcium chloride reacts with aqueous potassium carbonate is shown as: