Multiple Choice
How many bonds and lone pairs can be found around Mg atoms?
a) 2, 1 b) 2, 0 c) 3, 1 d) 3, 0
10. Chemical Bonding
Bonding Preferences
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How many bonds and nonbonding electrons can be found around Si atoms?
A
4, 4
B
2, 4
C
3, 2
D
4, 0
Verified step by step guidance1
Identify the valence electrons for a silicon (Si) atom. Silicon is in group 14 of the periodic table, which means it has 4 valence electrons.
Understand that silicon typically forms covalent bonds by sharing its valence electrons with other atoms to achieve a stable electron configuration similar to the nearest noble gas, which is neon.
Recognize that in a typical scenario, silicon forms four covalent bonds, using all its valence electrons to bond with other atoms, such as in silicon dioxide (SiO2) or silicon tetrafluoride (SiF4).
Since all four valence electrons are used in bonding, there are no nonbonding electrons (lone pairs) left on the silicon atom.
Conclude that around a silicon atom, you can find 4 bonds and 0 nonbonding electrons, which matches the given correct answer of 4, 0.
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