Which of the following sets of elements could replace the generic "X" symbol with their own to produce a valid dot notation for
the element(s)?
Select one:
a.
carbon, silicon, and germanium
b.
oxygen, sulfur, and selenium
c.
boron, aluminum, and gallium
d.
nitrogen, phosphorus and arseni
Select one:
a.
carbon, silicon, and germanium
b.
oxygen, sulfur, and selenium
c.
boron, aluminum, and gallium
d.
nitrogen, phosphorus and arseni
2 answers:
Nitrogen, phosphorus, and arsenic can replace the generic "X" symbol as they have five valence electrons in their outer shell.
<h3>What is a dot notation?</h3>- A Lewis electron-dot symbol or dot notation is a way of representing the valence electrons of an atom using dots around the symbol of the element.
- The dots are equivalent to the valence electrons in an atom
- These dots are arranged on the left and right and above and below the symbol
- No more than two dots are arranged on a side
- Valence electrons are the electrons that are positioned in the outermost shell of an atom
- They are the farthest from the nucleus and hence least tightly held electrons by the nucleus
- Valence electrons of an atom participate in the bond and reaction and hence, they determine the reactivity of an element.
Thus, nitrogen, phosphorus, and arsenic replace the X symbol as they 5 valence electrons in their outermost shell and produce a valid dot notation.
Learn more about valence electrons:
#SPJ1
Disclaimer: The question was given incomplete on the portal. Here is the complete question.
Question: Which of the following sets of elements could replace the generic "X" symbol with their own to produce a valid dot notation for the element(s)?
Select one:
a. carbon, silicon, and germanium
b. oxygen, sulfur, and selenium
c. boron, aluminum, and gallium
d. nitrogen, phosphorus, and arsenic
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