Starting with 1s2draw out the complete electron configuration for the most stable ion of selenium. Explain how you used the Octet Rule to determine your answer.

Q: (a) What are valence electrons? (b) How many valence electrons does a nitrogen possess? (c) An atom…

A: a) Valence electrons are the electrons that are present in the outermost shell or outer core of any…

Q: [Ne]3s23p4 is  the noble gas configuration of   Sulphur oxygen carbon nitrogen

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

Q: localized electron pairs?

A:

Q: Why can’t second-row elements have more than eight electrons in their valence shells? That is, why…

A: Interpretation: We have to tell why second row element does not have more than eight electrons.

Q: Consider the element silicon, Si. (a) Write its electron configuration.(b) How many valence…

A: Electronic configuration shows the electrons distribution of atoms or molecule in its molecular or…

Q: The following Lewis diagram represents the valence electron configuration of a main-group element.…

A: Valence electrons are outermost shell electrons and valence electrons are the same for all elements…

Q: Consider selenium oxychloride (SeOCl2):How many regions of electron density surround the central…

A: The compound given is SeOCl2.

Q: Consider an ionic compound, MX, composed of generic metal M and generic, gaseous halogen X. • The…

A: The enthalpy change during the formation of one mole of ionic crystal from one mole of gaseous…

Q: Consider an ionic compound, MX, composed of generic metal M and generic, gaseous halogen X. • The…

A: Heat of formation: M(s) + 1/2X2 (g) ---> MX (s) ΔH°f = -561 kJ/mol Sublimation: M(s) ------>…

Q: a) Explain why the third ionization energy of Al is significantly larger than its first ionization…

A: Ionization energy is defined as the amount of energy required to remove an electron from the…

Q: I chose the molecule permanganate (MnO4 -) Identify the central atom (or atoms) I know its Mn but,…

A:

Q: Write the full electron configuration for S-. full electron configuration: What is the atomic symbol…

A:

Q: 2. Use the data given below to calculate the CI-CI bond energy.( 4HC(g) + O:(g) 2H,0(g) + 2C(g) AH…

A:

Q: For each pair of covalently bonded atoms, choose the one expected to have the shortest bond length.…

A: Given pairs are : And  For each pair of covalently bonded atoms, choose the one expected to have…

Q: 3. Use the following data to estimate AH° for magnesium fluoride. Mg(s) + F2 (g) MgF2 (s) -2913…

A:

Q: Describe the electron-Sea Model?

A: When the positive charged metal atom interacts with the freely electrons by the electrostatic…

Q: ome OWLV2 | Online teaching and learning resource from Cengage Learning [References] Use the…

A:

Q: Use condensed electron configurations and Lewis electron-dot symbols to depict the ions formed from…

A: Since we answer only upto three sub-parts, so we'd answer the first three sub-parts only. Please…

Q: Electronegativity of an element is the average of its ionisation energy and electron affinity…

A: Solution Linus Pauling was the first man of science to explain the phenomena of inclination. the…

Q: How does the number of valence electrons vary within a group?

A: Valence electrons are the electrons present in outermost shell of an atom. The number of valence…

Q: Use condensed electron configurations and Lewis electron-dot symbols to depict the ions formed from…

A: Hello. Since the question has multiple sub-parts, the first three sub-parts shall only be solved in…

Q: Determine the energy change for the reaction Li (s) + ½ Cl2 (g) → LiCl (s) from the following data:…

A: According to Hess's Law∆Hf° = ∆Hsub + I⋅E + ∆Hdiss + EA + U            = 159 KJ/mole + 520…

Q: What are the group numbers and the generic outer electron configurations for a neutral atom with the…

A: The Lewis structures explain the arrangement of valence electrons present around an atom in a…

Q: 2. (a) What are valence electrons? (b) How many valence electrons does a nitrogen atom possess? (c)…

A: As per question, we need to explain:- a) What are valence electrons? b) How many valence electrons…

Q: Use the periodic table to (i) predict electron configurations for the following species: Arsenic…

A: Hello. Since the number of questions which have been posted is more than one, the first question…

Q: Write the full electron configuration for Cl-. full electron configuration: What is the atomic…

A: Electron configuration: The electrons that revolve around the atom's nucleus of any chemical element…

Q: Use condensed electron configurations and Lewis electron-dot symbols to depict the ions formed from…

A: Since we answer only upto three sub-parts, so we'd answer the first three sub-parts only. Please…

Q: Why does the octet rule not hold for any compounds containing element in the third period of the…

A: Octet Rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell.…

Q: Of the elements Li, K, N, P, and Ne, which (a) is the most electronegative?

A: The ability of an atom to attract the shared pair of electrons is known as electronegativity. On…

Q: Describe the location of electrons; describe how electron placement determines chemical bonding,…

A: The electron which is negativily charged species present in the hollows space of the atom and rotate…

Q: plain the statement of VBT. "The share

A: VBT is a short form of valence bond theory. This theory explains the bond formation between two…

Q: The correct Noble Gas configuration for Cl-  is:        a. 1s22s22p63s23p5…

A: The atomic number of Cl is 17  Hence there are 17 electrons in Cl.

Q: What is the noble gas electron configuration for Radon (Rn)? ldentify the valence electrons by…

A:

Q: Show Bond length decreases across a row of the periodic table as the size ofthe atom decreases ?

A: Bond length is defined as the distance between the atomic nucleus of two combining atoms. There is a…

Q: Write the significance of octet rule.

A: The octet rule refers to the tendency of atoms that prefer to have eight electrons in valence shell…

Q: write the noble gas configuration of chromium. if no electrons exist, dont type "2p^0" foor example

A:

Q: Some chemical reactions proceed by the in it ial loss or transfer of an electron to a diatomic…

A: a)

Q: Phenylalanine is an amino acid in which the elements are covalently bonded and that exhibits…

A: The statement which is true is as follows:

Q: Consider an ionic compound, MX2MX2, composed of generic metal MM and generic, gaseous halogen XX.…

A: Lattice energy: It is equal to the change in energy when one of ionic compound is formed fro its…

Q: [References] Write electron configurations for the most stable ion formed by each of the elements…

A: Atoms have the tendency to form a complete octet configuration in their valence shell. Aluminum…

Q: Use condensed electron configurations and Lewis electron-dotsymbols to depict the ions formed from…

A: Since we answer only upto three sub-parts, so we'd answer the first three sub-parts only. Please…

Q: Write electron configurations for a. the cations Sr2+, Cs+, In+, and Pb2+. b. the anions P3-, S2-,…

A:

Q: The work function (Φ) of a metal is the minimum energy needed to remove an electron from its…

A: The ionization energy given corresponds to the energy, required for the complete removal oa 1mol of…

Q: Which neutral atom is isoelectronic with each of the following ions? H-, Ca2+, In3+, Ge2+

A: Isoelectronic species are known as chemical species which have the same number of electrons. An ion…

Q: What molecules are likely to be odd electron molecules?

A: The molecule whose valence electrons are not even number but it holds odd valence electrons, named…

Q: 1. Draw Lewis Structures (including resonance structures if applicable) for the following…

A: Resonance structures Two or more Lewis Structures that collectively describe the electronic bonding…

Q: What are the group numbers and the generic outer electron configurations for a neutral atom with the…

A: The general outer electronic configuration of 1A (1) group is ns1 The general outer electronic…

Actinides

The elements in which the extra electron tends to enter the 5f-orbitals of (n–2)th main shell are considered 5f-block elements. They are also named actinides. Actinides include 15 elements, from atomic number 89 to 103.