Which of the following is not isoelectronic with t...

Question

Which of the following is not isoelectronic with the others? S2- Ar Sc3+ Ti4+ Ga3+

Jules Bruno · Accepted Answer

Isoelectronic means that the ions have the same number of electrons. To determine which element is not isoelectronic, we will determine the number of electrons in each ion given.[readmore]For S2–: The atomic number of S is 16. S2– has a charge of –2 which means S gained 2 electrons. This means the number of electrons in S2– is 16 + 2 = 18 electrons.For Ar: It is neutral. This means that the number of electrons is equal to the number of protons and atomic number. The atomic number of Ar is 18. So, the number of electrons in Ar = 18 electrons. For Sc3+: The atomic number of Sc is 21. Sc3+ has a charge of +3 which means Sc loss 3 electrons. This means the number of electrons in Sc3+ is 21 – 3 = 18 electrons.For Ti4+ : The atomic number of Ti is 22. Ti4+ has a charge of +4 which means Ti loss 4 electrons. This means the number of electrons in Ti4+ is 22 – 8 = 18 electrons.For Ga3+: The atomic number of Ga is 31. Ga3+ has a charge of +3 which means Ga loss 3 electrons. This means the number of electrons in Ga3+ is 31 – 3 = 28 electrons.Answer: Ga3+ is not isoelectronic with the others.

Problem: Which of the following is not isoelectronic with the others? S2- Ar Sc3+ Ti4+ Ga3+

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Problem Details

Problem: Which of the following is not isoelectronic with the others? S2- Ar Sc3+ Ti4+ Ga3+

FREE Expert Solution

Problem Details

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