Explanation:
In chemistry and quantum mechanics, an orbital is a mathematical function that describes the wave-like behavior of an electron, electron pair, or (less commonly) nucleons. An orbital may also be called an atomic orbital or electron orbital. Although most people think of an "orbit" regarding a circle, the probability density regions that may contain an electron may be spherical, dumbbell-shaped, or more complicated three-dimensional forms.
Answer: option c. the mixing of solute and solvent molecules
Explanation:
Okay... what are the following
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WHAT IS A COMPOUND ?</h2><h2>
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ᴛʜᴇ ᴀɴꜱᴡᴇʀ ᴛᴏ ᴛʜɪꜱ ɪꜱ :

ʙᴇᴄᴀᴜꜱᴇ ꜱᴏᴅɪᴜᴍ ɪꜱ ᴀ ᴄᴏᴍᴘᴏᴜɴᴅ.
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ᴊᴀᴄᴇ ノシ
Answer: barium oxide
Explanation: The barium will give some of it's electrons up to the oxygen, and then they will both reach the stability of a noble gas. Then, they will both combinate to barium oxide, so the answer is barium oxide.