Isoelectronic ions are ions that have the same number of electrons. Choose the option in which the three species meet this condition: a) 3Li, 11N...
Isoelectronic ions are ions that have the same number of electrons. Choose the option in which the three species meet this condition:
a) 3Li, 11Na, and 19K.
b) 4Be2+, 12Mg2+, and 20Ca2+.
c) 3Li1+, 38Sr2+, and 13Al3+.
d) 8O2–, 11Na1+, and 13Al3+.
e) 17Cl1–, 35Br1–, and 53I1–.
a) 3Li, 11Na, and 19K.
b) 4Be2+, 12Mg2+, and 20Ca2+.
c) 3Li1+, 38Sr2+, and 13Al3+.
d) 8O2–, 11Na1+, and 13Al3+.
e) 17Cl1–, 35Br1–, and 53I1–.
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Ed 
A alternativa correta é a letra E) 17Cl1–, 35Br1–, and 53I1–. Todos os íons possuem 18 elétrons.
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