Multiple Choice
Which subshell holds the valence electrons of barium (Ba)?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
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Which of the following best describes an atom with five or more valence electrons?
A
It tends to lose electrons easily.
B
It is always a metal.
C
It is likely to be a nonmetal.
D
It is always a noble gas.
Verified step by step guidance1
Recall that valence electrons are the electrons in the outermost shell of an atom and determine its chemical properties and reactivity.
Understand that atoms with five or more valence electrons are typically found on the right side of the periodic table, where nonmetals are located.
Recognize that nonmetals tend to gain or share electrons to complete their octet rather than lose electrons, which is characteristic of metals.
Note that metals usually have fewer valence electrons (1 to 3) and tend to lose electrons easily, while noble gases have a full valence shell and are generally inert.
Conclude that an atom with five or more valence electrons is likely to be a nonmetal because it tends to gain electrons to achieve a stable electron configuration.
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