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Atoms gain the same electron configuration as noble gases by
losing or gaining electrons
lose one electron
argon
valence
two
5+
positive, negative
radium
Electrons found in the outer shell (or energy level) of an atom are called _____________ electrons.
losing or gaining electrons
lose one electron
argon
valence
two
5+
positive, negative
radium
An element in group IIA would form a __________ ion while an element in group VIIA would form a(n) __________ ion.
losing or gaining electrons
lose one electron
argon
valence
two
5+
positive, negative
radium
The first shell of any atom can hold maximum of ___________electrons.
losing or gaining electrons
lose one electron
argon
valence
two
5+
positive, negative
radium
Which of these elements do not have atoms whose out shells are full of electrons?
losing or gaining electrons
lose one electron
argon
valence
two
5+
positive, negative
radium
If a chlorine atom were to gain one more electron it would be similar to, but not exactly the same as -
losing or gaining electrons
lose one electron
argon
valence
two
5+
positive, negative
radium
If an ion has 20 protons and 15 electrons it will be ___________.
losing or gaining electrons
lose one electron
argon
valence
two
5+
positive, negative
radium
When a potassium atom reacts with a bromine atom the potassium atom will
losing or gaining electrons
lose one electron
argon
valence
two
5+
positive, negative
radium
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