![]() Equal electric or equal charge is what the phrase refers to. Two atoms, ions, or molecules are said to be isoelectronic if their electronic structures and valence electron counts are identical. Keep in mind that + ions denote the loss of electrons, whereas - ions denote the acquisition of electrons. For 1- and 2-, we need the atoms S- and P-2, which contain 16 and 15 electrons, respectively. Then, these elements tend to gain or lose electrons easily (option C.) is not true in regard to noble gases.Īrgon and potassium, which have 18 and 19 electrons respectively, are needed for the atoms 1+ and 2+ because chlorine only has 17 electrons. In this way the noble gases have such low reactivity and do not combine with other atoms, also calling them inert gases. In this way the noble gases cannot have more electrons in their last energy level, because this level is already complete and stable. This complies with the duet rule, because it only has two electrons. The noble gases are characterized by complying with the octet rule, that is, they have 8 electrons at their last energy level, with the exception of helium. The noble gases encompass the elements of group 18 of the periodic table and include six elements: Helium, Neon, Argon, Krypton, Xenon and Radon. The noble gases are a group of elements of the periodic table that are characterized, in normal conditions of pressure and temperature, for being monoatomic gases without odor, without color and with very low chemical reactivity. ![]() These elements tend to gain or lose electrons easily (option C.) is not true in regard to noble gases.
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