Question

xef4
spell out the full name of the compound.

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part b

pi3
spell out the full name of the compound.

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part c

so3
spell out the full name of the compound.

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part d

sicl4
spell out the full name of the compound.

Explanation:

For naming binary covalent compounds (compounds formed between two non - metals), we use prefixes to indicate the number of each atom. The prefixes are: 1 - mono (not used for the first element usually), 2 - di, 3 - tri, 4 - tetra, 5 - penta, etc. The second element ends with - ide.

• For \(XeF_4\): Xe is xenon (first element, no mono - prefix). There are 4 F atoms. F is fluorine (ends with - ide). So the name is xenon tetrafluoride.
• For \(PI_3\): P is phosphorus. There are 3 I atoms. I is iodine (ends with - ide). So the name is phosphorus triiodide.
• For \(SO_3\): S is sulfur. There are 3 O atoms. O is oxygen (ends with - ide). So the name is sulfur trioxide.
• For \(SiCl_4\): Si is silicon. There are 4 Cl atoms. Cl is chlorine (ends with - ide). So the name is silicon tetrachloride.

Answer:

• Xenon tetrafluoride
• Phosphorus triiodide
• Sulfur trioxide
• Silicon tetrachloride