Question

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peer deck interactive slide
#4
elements in group 1a, alkali metals have how many valence
electrons?
periodic table t/f
your response
2
1
0
student answer

Explanation:

Step1: Recall the concept of valence electrons

Valence electrons are the electrons in the outermost shell of an atom.

Step2: Know the position of Group 1A elements

Group 1A elements (alkali metals) are in the first column of the periodic table.

Step3: Determine the number of valence electrons

For main - group elements, the group number (for groups 1A - 8A) gives the number of valence electrons. Group 1A elements have 1 valence electron.

Answer:

1