How many electrons are in the most likely ion formed from an atom located in group 5A and period 3? O 12 O 16 18

Q: How many electrons are in the 4th energy level in selenium?

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Q: An atomic anion with a charge of -1 has the following electron configuration: 1.s²2s²2p 6 What is…

A: Since, Electronic configuration represent the electron present in orbital in which way. Arrangement…

Q: Which element forms an ion that is smaller than its atom? O lead O fluorine O sulfur oxygen

A: Atoms are made up of subatomic particles like electrons, protons and neutrons. The electrons are…

Q: Atom/Ion: Cl # Core Electrons # Valence Electrons Effective Nuclear Charge (Zeff)

A: Answer:- This question is answered by using the simple concept electronic configuration then core…

Q: Atomic mass →→ 12 C Atomic number → 6 O 8 O 16 6 O 32 O 16 4 O 8 1 1 H Using the information in the…

A: Valence electrons: Valence electrons electrons which are present in the outermost shell (energy…

Q: Which ions have the same number of electrons as an atom of krypton Se^2- As^3- Ca^2+ K+ Which…

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Q: The following table gives numbers of electrons, protons, and neutrons in atoms or ions of a number…

A: Given find the ions on species A , B and C

Q: Effective nuclear charge of: 3p electrons in chromium 3s electrons in cobalt 2s electrons in…

A: Zeff can be calculated by slaters Rule in any element .          Formula for Zeff   = atomic Number…

Q: Fill in the table below Species Protons Neutrons Electrons Electron Configuration 97MO4+ 65C.

A: The table is filled as follows: The number of protons in an atom= atomic number of that atom The…

Q: A scientist needs to find an atom that will work well for her experiment on middle school students.…

A: Answer:- This question is answered by using the simple concept of reactivity and the stability of…

Q: A bromine atom has an atomic number of 35 and an atomic mass of 80. What is the structure of this…

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Q: natomic anion with a charge of -1 has the following electron configuration: 1s² 2s²2p³ What is the…

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Q: Arrange the following atoms by increasing number of neutrons. 134Ba, 134Ce, 134Xe

A: Given:

Q: Which of the following defines the atomic number of a given element?     The number of electrons in…

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Q: What is the likely charge of the ions formed by members of the following families? Alkali metals…

A: To check the most likely charge we need to determine the valance Electrons on that group. Also…

Q: An atom with a total of _______ electrons is most likely to become an anion. 10 9 11 7

A: When an atom looses electron it gets positive charge. This negatively charged ion is called cation.…

Q: Which of the following pairs of atoms and ions are isoelectronic?    Li+, Rn    S2−, Cl−…

A: Isoelectrons are atoms, molecules or ions that have same number of electrons in their shell or…

Q: How many core electrons are in N-2?

A: Given :- Atomic symbol = N-2  To find :- number of core electrons  Atomic number of N = 7

Q: An atomic anion with a charge of-2 has the following electron configuration: 15252p'3s'3p What is…

A: Atomic anion with a charge of -2 has electron configuration: 1s2 2s2 2p6 3s2 3p5 ⇅  ⇅  ⇅⇅⇅  ⇅  ⇅⇅↑…

Q: Which of the following pairs is considered to be isoelectronic? Brand Kr K and Ar Xe and I H and Li

A: Two atoms, ions or molecules that have the equal number of electrons. -> For neutral atom  Atomic…

Q: Which of these elements has the highest first ionization energy? silicon sodium chlorine sulfur…

A: Ionization energy: The amount of energy required to remove a valence electron from neutral, gaseous…

Q: How many valence electrons does each of the following atoms have? titanium, ? = 22 iodine, ? = 53…

A: Electrons are filled in a different atomic orbital in an atom. According to the Aufbau rule, the…

Q: An atomic anion with a charge of -2 has the following electron configuration: 1s²2s²2p What is the…

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Q: Why couldn't a Na^+ Ion formed by adding a proton to a Na atom

A: Here we are asked to tell about reason why couldn't a Na+ ion form by adding a proton to a Na atom?…

Q: Which of the following pairs of atoms and ions are isoelectronic?    Se2−, Br−    Cs+, Xe…

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Q: Atom/Ion: S # Core Electrons # Valence Electrons Effective Nuclear Charge (Zeff)

A: All step  clearly explained  in Handwritten  solution.

Q: E is a made up element and contains 6 valence electrons Y is a made up element and contains 7…

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Q: You have been asked to synthesize a new isotope for cadmium. Which part of the original atom would…

A: Isotopes of an element have the same atomic number but different mass numbers.

Q: Which elements have only one electron shell? O carbon Ohydrogen O helium

A: The electron configurations of the given elements are:carbon: [He] 2s22p2hydrogen: 1s1helium: 1s2

Q: Beryllium has an atomic number of 4. How many neutrons does the isotope beryllium-9 have? O 4 O 13 9…

A: * Atomic number = Number of protons  For the neutral atom , Number of electrons = number of protons…

Q: An atomic cation with a charge of +3 has the following electron configuration: 6 15²25²2p 3s 3p What…

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Q: Which of the following atoms is correctly listed with its number of valence electrons? Li has 3 B…

A: Valence electrons are electrons present in outermost shell or energy level of an atom. The number of…

Q: How many electrons in the valence shell for Zirconium atom (Zr) 6 electrons 2 electrons O 10…

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Q: Which choice(s) of the following have 18 electrons O scandium3+ Calcium O Argon O Argon ion O…

A: A multiple choice question based on periodic table, which is to be accomplished.

Q: An atomic cation with a charge of +1 has the following electron configuration: 6 1s²2s²2p 3s²3pº…

A: Since, Electronic configuration represent the electron present in orbital in which way. Arrangement…

Q: Elements in group 7A are considered

A: There are total seven periods and eighteen groups in the modern periodic table where all the…