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QuestionChemistry

What semimetal can form four single covalent bonds?
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Step 1:
I'll solve this problem step by step:

Step 2:
: Identify the key characteristics of semimetals

- Semimetals (metalloids) are elements that have properties between metals and nonmetals - They are located along the zigzag line on the periodic table - Common semimetals include boron, silicon, germanium, arsenic, antimony, and tellurium

Step 3:
: Consider bonding capabilities

- The ability to form four single covalent bonds requires: * Having 4 valence electrons * Being able to form stable covalent bonds

Step 4:
: Analyze the semimetal properties

- Silicon (Si) is the semimetal that perfectly matches these requirements - Silicon is located in Group 14 (IVA) of the periodic table - It has 4 valence electrons in its outer shell - Can readily form four single covalent bonds - Commonly used in semiconductor and electronics industries

Step 5:
: Verify bonding characteristics

- Electronic configuration of silicon: $$1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{2}
- Can hybridize its orbitals to form 4 equivalent covalent bonds

Final Answer

Silicon (Si) is the semimetal that can form four single covalent bonds.