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 arseni

Answer 1

Answer:

a

Explanation:

Because of their valence electron

Carbon, Silicon and germanium has 4 as their valence electron

Answer 2

Nitrogen, phosphorus, and arsenic can replace the generic "X" symbol as they have five valence electrons in their outer shell.

What is a dot notation?

• 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

What are the valence electrons?

• 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:

brainly.com/question/371590

#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