What has the highest number valence electrons: N, Ca, O, As, or I?

Q: Which neutral atom is isoelectronic with each of the following ions: F, Zr, Mn, I, Pb²+? Express…

A: Which neutral atom is isoelectronic with the given ion---

Q: To which group of the periodic table does the general valence electron configuration ns2np4…

A: ns2np4 means 2 electrons in outer s orbital and 4 in outer p orbital

Q: Which of the following electronic configuration is for the valence electrons of an element from…

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Q: Arrange the following from the largest to smallest ions (Ca, Mg2+, Br-, Lit, Se)

A: Increasing the number of electrons in a shell will increase the size of the resulting anion whereas…

Q: Arrange the following ions in order of increasing ionic radius: cesium ion, barium ion, telluride…

A: The ions given are cesium ion (Cs+), barium ion (Ba2+), telluride ion (Te2-) and iodide ion (I-).…

Q: Consider the imaginary element X. Which would you expect to have the largest radius and why? 1. X*…

A: ->when element loss electron then cation of element form.But protan are same.

Q: Part A Which of the following have the same number of valence electrons? O Cs, Ba, Lu O P, As, Sb O…

A: In the periodic table 18 groups and 7 periods are present. First 2 groups are belonging to s-block…

Q: How does the structure of a lithium ion vary from that of a lithium atom?

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Q: Question attached

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Q: Which pair of elements have the same number of valence electrons? A. O, Si B. He, Be C. Ne, Mg…

A: We have to find from the given options which pair of elements have the same number of valence…

Q: Write the number of valence electrons in the elements Rb, Al, Sb, Te and I?

A: Rb=1 Al=3 Sb=5

Q: Compared to their neutral atom counterparts, ions will have smaller or larger atomic radii due to…

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Q: What +2 ion has the electron configuration: [Kr]4d?

A: Given that : We have to determine what +2 ion has the electron configuration : [Kr]4d2

Q: Which of the following species has the largest atomic radius? (A) Po*² (В) Ро-! (С) Ро° (D) Po-' (E)…

A: Which of the given atoms or ions having largest atomic radius ?

Q: Doesn't N have 5 valence electrons or did do that incorrectly?

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Q: Write the electronic configurations of the third-row elements: Na, Mg, Al & Si, and indicate or…

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Q: How many total electrons in an atom of Argon (Ar) have I = 1? (Not just the valence shell)

A: The objective of the question is to find out the number of electrons present in argon having l=2.

Q: Write the condensed (noble-gas) electron configuration of Cr²⁺, Co2+,Mn4+,and Cr3+

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Q: How do you calculate the effective nuclear charge for the valence shell electrons of Ca^2+?

A: Effective Nuclear Charge: -The effective nuclear charge is the net charge an electron experiences in…

Q: Arrange the ions in order of decreasing radius: Rb+, Br-, Se2-, Sr2+.

A: Atoms are tiny particles composed of electrons, protons, and neutrons. Protons and neutrons are…

Q: What is the electron configuration of a silicon atom? O 1s252p63s4 1s²2s²2p63s²3p² O 1s252p63p4…

A: The atomic number of silicon is 14 and have symbolic representation as Si.  It's belong to 14th…

Q: In each of the following pairs, which has the larger radius? (a) Li atom or Li ion (b) Mg atom or Mg…

A: From the following, which has the larger radius has to be given.

Q: Put the following in order of increasing size. Put the smallest species on the TOP and then arrange…

A: Ions that contain the same number of electrons are called isoelectronic species.  For example, F,…

Q: The Series Cl,As, Sb ,In is arranged by increasing ionization energy TRUE OR FALSE

A: Ionization energy: The amount of energy required to remove a valance electron from an isolated…

Q: 13. Which of the following lists of elements is ordered by increasing number of valence electrons?…

A: according to periodic table is a group of present in number of  valence electrons.  1 - first group…

Q: Which of the following species has the 'second smallest' radius:  Ti2+, V3+, K+, Br-, Cl-

A: Atomic radius: The distance between the nucleus and the outermost electron is known as the atomic…

Q: Which of the following choices has the ions in order of decreasing size? O Br, Rb*, Se2- O Rb*,…

A: Cations are formed from the loss of electron & anions from the gain of electrons.

Q: The reactivity of an atom arises from  1. the average distance of the outermost electron shell from…

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Q: 12. 13. Which of the following lists of elements is ordered by increasing number of valence…

A: In the above question, the periodic trends on the elements are described. The physical properties of…

Q: Write the electron configuration for the Br atom and the predicted Br ion.

A: ◆ Electronic Configuration is the distribution of electrons in the energy levels of the atom. The…

Q: Arrange these ions according to ionic radius. Ca2+, K+, Cl-, S^2-, P^3-

A: Rule: A nucleus of strong or high positive charge pulls its valence electron cloud towards itself…

Q: Using partial orbital diagrams explain why arsenic can acquire charges of 3- and 3+ but not 2+

A: Using partial orbital diagrams explain why arsenic can acquire charges of 3- and 3+ but not 2+

Q: Write the number of valence electrons in the elements Ca,Si,Kr,S and Na

A: The given elements are, Ca Si K S Na

Q: 1. How many valence electrons would atoms of the element boron (B) have? 2. How many valence…

A: The answer are as follows,

Q: Without consulting any tables, arrange the following sub- stances in order and explain your choice…

A: Since you have posted multiple questions, we will solve only first question for you. To get the…

Q: Write the electron configurations for the following ions, anddetermine which have noble-gas…

A: (a) The atomic number of cobalt is 27 and the electron configuration is, Co2+ is obtained by…

Q: Which of the following species has the 'smallest' radius: Ti2+, v3+, K*, Br", CI-

A: The atomic radius is defined as the distance between the center of the atom and the outermost…

Q: Which of the following is series of isoelectronic atoms and/or ions? OB, C, N, O O Sn, As, S, F O…

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Q: Which of the following species has the 'second smallest' radius: Ti2+, V3+, K*, Br", CI-

A:

Q: How many valence electrons does an atom of any element in group 6A have ?

A: Given information,      Element in group 6A

Q: The first three ionization energies of an element X are 590, 1145, and 4912 kJ/mol.  What is the…

A: Ionization energy is the energy required to remove an electron from its atom in gaseous state. 1st…

Q: At first glance, we expect the Zeff of a valence electron of sodium (Z = 11) to be 1 but in reality,…

A: The effective nuclear charge has Following formula - Z* = Z - S Here, Z* is effective nuclear charge…

Q: What is the electron configuration of: Ag, Bi^2-, Rh^3+, Sn^3+, Si^-

A: The atomic number of Ag = 47. The atomic number of  Bi = 83 The atomic number of Rh =45 The atomic…

Q: Which is the most stable electron configuration for copper (Cu)? O[Ar] 4s? 3d° O[Ar] 4s1 3d1o O[Ar]…

A: Atomic number of Cu is 29. The expected electronic configuration of copper according to rule is,…

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.