Which statement is incorrect concerning the formation of ionic compounds? a Halogens tend to form anions with a charge of -1.
b. Alkali metals tend to form cations with a charge of +1.
c. Metals tend to form cations, while nonmetals tend to form anions.
d. Transition metals tend to form cations with a charge of +3.
e. Noble gases tend not to form ionic compounds.

d. Transition metals tend to form cations with a charge of +3.

Explanation:

Which statement is incorrect concerning the formation of ionic compounds?

a. Halogens tend to form anions with a charge of -1.  TRUE. Halogens have 7 electrons in their valence shell, so they tend to gain 1 electron to fill their octet.

b. Alkali metals tend to form cations with a charge of +1.  TRUE. Alkali metals have 1 electron in their valence shell, so they tend to lose 1 electron to fill their previous octet.

c. Metals tend to form cations, while nonmetals tend to form anions.  TRUE. Metals have low electronegativity while nonmetals have high electronegativity.

d. Transition metals tend to form cations with a charge of +3.  FALSE. Transition metals form cation with numerous charges.

e. Noble gases tend not to form ionic compounds. TRUE. Noble gases are very stable because their octet is full.

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