Question
Use the periodic table to answer the question.
An illustration shows the periodic table of elements. The elements in the periodic table are arranged in groups (columns numbered 1 through 18) and periods (rows numbered 1 through 7) such that the atomic number increases along a period from left to right. The elements are divided into the following categories: · Alkali metals · Alkaline earth metals · Transition metals · Post-transition metals · Lanthanides · Actinides · Metalloids · Nonmetals · Noble gases · Unknown The elements are also classified on the basis of their physical states as follows: · Solid · Liquid · Gas · Unknown The element sulfur is enlarged with the following properties. · Chemical symbol: S · Name: Sulfur · Atomic Number: 16 · Atomic mass: 32.06 · Common oxidation states: 6, 4, 2, negative 2 · Electronegativity: 2.58 · Ionization energies: 999.589 · Electron configuration: [Ne] 3s2 3p4
How many valence electrons are in an atom of the element fluorine?
(1 point)
Responses
seven
seven
five
five
two
two
eight
eight
The correct answer is seven.
To determine the number of valence electrons in an atom of fluorine, you can find its position on the periodic table and examine its electron configuration.
Fluorine (F) is found in Group 17 (Group 7A) of the periodic table, also known as the halogens. The Group number tells you the number of valence electrons an element has.
In the case of fluorine, it is in Group 17, so it has 7 valence electrons. Therefore, the correct response is "seven."