QQuestionChemistry
QuestionChemistry
Name the elements that have a total of 3 valence electrons.
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Answer
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Step 1:I'll solve this problem step by step, following the specified LaTeX formatting guidelines:
Step 2:: Identify Elements with 3 Valence Electrons
To find elements with 3 valence electrons, we need to look at the periodic table and analyze the electron configuration of elements in specific groups.
Step 3:: Locate Potential Groups
Elements with 3 valence electrons are typically found in Group 13 (formerly known as IIIA) of the periodic table.
Step 4:: List the Elements
- Thallium ($$Tl$$)
The elements in Group 13 with 3 valence electrons are:
Step 5:: Verify Electron Configuration
- $$Tl$$: $$1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{2} 3d^{10} 4p^{6} 5s^{2} 4d^{10} 5p^{6} 6s^{2} 4f^{14} 5d^{10} 6p^{1}$$ (3 valence electrons)
Let's confirm their valence electron count:
Final Answer
The elements with 3 valence electrons are Boron (B), Aluminum (Al), Gallium (Ga), Indium (In), and Thallium (Tl).
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