Questions: Which of the following atoms contains only three valence electrons: Ar, S, Mg, Al, or Cl ? (Enter your answers as a comma-separated list.)

Which of the following atoms contains only three valence electrons: Ar, S, Mg, Al, or Cl ? (Enter your answers as a comma-separated list.)
Transcript text: Which of the following atoms contains only three valence electrons: $\mathrm{Ar}, \mathrm{S}, \mathrm{Mg}, \mathrm{Al}$, or Cl ? (Enter your answers as a comma-separated list.)
failed

Solution

failed
failed

Solution Steps

Step 1: Identify the Group of Each Element

To determine the number of valence electrons in an atom, we need to identify the group number of each element in the periodic table. The group number for main-group elements (s and p blocks) typically indicates the number of valence electrons.

  • Argon (Ar) is in Group 18.
  • Sulfur (S) is in Group 16.
  • Magnesium (Mg) is in Group 2.
  • Aluminum (Al) is in Group 13.
  • Chlorine (Cl) is in Group 17.
Step 2: Determine the Number of Valence Electrons

Using the group numbers, we can determine the number of valence electrons for each element:

  • Argon (Ar): Group 18 elements have 8 valence electrons.
  • Sulfur (S): Group 16 elements have 6 valence electrons.
  • Magnesium (Mg): Group 2 elements have 2 valence electrons.
  • Aluminum (Al): Group 13 elements have 3 valence electrons.
  • Chlorine (Cl): Group 17 elements have 7 valence electrons.
Step 3: Identify the Element with Three Valence Electrons

From the above analysis, Aluminum (Al) is the element with three valence electrons.

Final Answer

\(\boxed{\text{Al}}\)

Was this solution helpful?
failed
Unhelpful
failed
Helpful

Questions asked by other users

failedAnswered
Find the value of x in the equation below. 1=x-4
failedAnswered
Given: angle R is congruent to angle Q line segment AS is congruent to line segment AT Which of the following may not be true? - angle 2 is congruent to angle 3 - line segment RS is congruent to line segment TQ - angle 5 is congruent to angle 6 - line segment AR is congruent to line segment AQ
failedAnswered
mog(A) = [1 0 -1 2; 0 1 -1 1; 0 0 0 0], π=4=m A=[ ]
failedAnswered
If a box with a square cross section is to be sent by a delivery service, there are restrictions on its size such that its volume section (in inches). (a) Is V a function of x? Yes, V is a function of x. No, V is not a function of x. (b) If V=V(x), find V(11) and V(23). (If V is not a function of x, enter DNE.) V(11)=3872 V(23)=4232 in^3 (c) What restrictions must be placed on x (the domain) so that the problem makes physical sense? (Enter your answer)
failedAnswered
Determining age involves knowing the functional capacities of a person's vital organs.