Explain how the iron atom can form both an iron 2+ ion and an iron 3+ ion.

Q: How many valence electrons are there in the tetramethylammonium ion, (CH3)4N+? a. 32 b. 18 c. 8 d.…

A: Volume Shell of N

Q: Which of the following elements will most likely form ions with a –2 charge? a) Cr b) Sr c) Se…

A: Which of the following elements will most likely form ions with a –2 charge?

Q: Which of the following ions is isoelectronic to Ne? O-2 OF-2 K+ O Al+2 None of these

A: Isoelectronic species(moreover, 'Iso' means same and 'electronic' means electrons) are those species…

Q: (After transferring 2 electrons, atom forms a X 2+ ion containing 10 electrons.) Identify element X…

A: Atomic number is equivalent to number of electrons or number of protons in neutral element, that is…

Q: How many valence electrons do the following atoms have?a. boron     b. nitrogen     c. oxygen     d.…

A: In an atom, the last atomic shell is known as the valence shell and the electrons accommodated in…

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: Why does fluorine form an F - ion instead of an F + ion?

A: Interpretation - Fluorine form an F- ion instead of an F+ ion is to be explained.

Q: How many electrons are in Cr^{6+}6+?

A: Cr has an atomic number of 24. Atomic number is number of protons, which is equal to the number of…

Q: Considering only ions with charges of +1, +2, -1 and -2, or neutral atoms, give the symbols for 4…

A: Isoeletronic species are those species which have equal number of electrons present in them  Since…

Q: Which of these is the smallest? Arsenic Selenium Bromine Krypton Iodine

A: Answer:- This question is answered by using the simple concept of variation of atomic size across…

Q: How many inner, outer, and valence electrons are present inan atom of each of the following…

A:

Q: Elements in group 17 (7A) of the periodic table are likely to form ions with the charge   A.…

A: In periodic table, halogens are present in group 7A.                 There will be seven valence…

Q: what are 2 symbols of two ions that are isoelectronic with the calcium ion?

A: If two elements are having same number of total electrons, then they are isoelectronic with each…

Q: Which of these ions is isoelectronic to the oxide anion O2 ? A) K* B) Mg²* C) CI D) S? E) Pb2*

A: Isoelectronic species can be defined as the species containing the equal number of electrons. Toe…

Q: 1. Write the formula of the following compounds: a. Strontium Hydride b. Radium peroxide c. Cesium…

A: A chemical formula is a way of presenting  a  molecule in terms of the atoms that the molecule is…

Q: Which element would most likely form an ionic bond with calcium? O A. Na о В. Аl O C. I D. Ne

A: Ionic bond : " A bond which is formed by complete transfer of one or electrons is called ionic bond…

Q: Starting with the previous noble gas, write the condensed electron configurations of the following…

A:

Q: How is F3O4 the oxide ion of Fe 3+?

A: SOLUTION: Step 1: Fe3O4 is a spinel compound. Spinel means it contains metal ion of 2 oxidation…

Q: Write names as appropriate for each of the following monatomic ions.  a. S-2 b. Cr+2

A: a) S-2 is an monoatomic anion. •When a neutral atom gain electron it becomes anion. •RULE:-When we…

Q: Which of the following elements would you expect to have the lowest first ionization energy? Select…

A: Given: Some elements are given . To find: Element with lowest first ionization energy.  Solution:…

Q: Which has seven valence electrons? A. sodiumB. chromiumC. boronD. argonE. chlorine

A: The given options are,

Q: If a Chlorine (CI) atom gained an electron, what would be the overall charge? O+1 O +2

A: Chlorine gains an electron, leaving it with 17 protons and 18 electrons. Since it has 1 more…

Q: How many inner, outer, and valence electrons are present in an atom of each of the following…

A: Periodic table represents the systematic arrangement of elements in which the properties of these…

Q: lustrate the electron spin quantum number of Fluorine

A: Given : We have to write electron spin quantum number of Fluorine.

Q: Which element is least likely to form an anion? O Sodium O Selenium O Chlorine O Phosphorous MacBook…

A: The process of removal of valence electron from the atom is called oxidation or ionization. After…

Q: Based on what you just learned about ionization energies, explain why valence electrons are more…

A: The electrons in the innermost shell are called the core electrons while the electrons in the…

Q: Explain why it is possible to determine the charge of monoatomic ions from their position on the…

A: Octet rule is the tendency of atoms to prefer to have eight electrons in the valence shell. Electro…

Q: Write an equation that shows the formation of a rubidium ion from a neutral rubidium atom (Z=37).

A: Rubidium atomic number is 37.  it is a silvery white metal present in alkali metals (IA group).  Its…

Q: Which of the following pairs of ions represent isoelectronic species? A) Mg2* and O² B) K+ and Li+…

A: Isoelectronic species has same number of electrons.

Q: How many electrons are in the most likely ion formed from an atom located in group 5A and period 3?…

A: When a neutral atom gain or lose electron, then it is called as ion.  If it gains the electron then…

Q: Determine the number of valence electrons in each of the neutral atoms. carbon: nitrogen: охудen:…

A: Valence electrons are the electrons in the outermost shell of an atom.

Q: 2.8 Which neutral atom has the same electron configuration as the nitrogen ion?

A: Concept based on the atoms and ions and their electronic configuration.

Q: Write the complete electron configuration for: 1. potassium ion 2. phosphide 3. iron(III) ion 4.…

A: We need to write the electronic configuration for,  1. Potassium ion 2. Phosphide 3. iron (III) ion…

Q: Which one of the following pairs contains isoelectronic species? O Ca2+, Cl- O Br", CI O Cr3+, V3+…

A:

Q: Predict the chemical formulas for the binary compounds that hydrogen forms with the elements…

A: Binary compounds are compounds which have only two different type of elements .  To predict the…

Q: How many protons, neutrons, and electrons does the79Se2- ion possess?

A: The arrangement of the elements based on the atomic number in rows and columns provides the periodic…

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

A:

Q: MCQ 47: Apple green flames are produced by the compounds of A. Strontium B. calcium C. barium D.…

A: The metal compound when introduced in flame they impart  characteristic colour to flame. To perform…

Q: Explain why group 2 elements never form M3+ ion

A: Group 2 elements are known as alkaline earth metals. The examples include Be (beryllium), Mg…

Q: Explain what happens to the lithium atom when it becomes an ion and why this happens? Liaba (adins…

A: Cation :-  When a neutral atom loses an electron it forms positively charged ion known as cation…

Q: same number of electrons

A:

Q: How many valence electrons do the following elements have? A.) Sr B.) Cl C.) Si D.) Se E.) H

A: Interpretation -  To tell about how many valence electrons do the following elements have -  A.) Sr…

Q: Leamin Determine the chemical formula for each of the compounds. sodium sulfite: Na,SO3 potassium…

A: Chemical formula of a compound is representation of compound by Chemical symbols with its fixed…

Q: As you move from left to right across the periodic table, the number of valence electrons in an atom…

A: As you move from left to right across the periodic table, the number of valance electron in an atom…

Q: Determine the number of valence electrons in each of the neutral atoms. a) Carbon b) Nitrogen  c)…

A: Valence shell electrons are the outer most shell electrons that associated with an atom. These…

Q: Choose all the common ions that are isoelectronic with Ne?    Na+    O2−    Br−    Mg2+…

A: Isoelectronic is defined as atoms, ions, or molecules that are same number of valance electrons and…

Q: If Arsenic is to be isoelectronic with Se2 (selenide ion), it should gain 3 electrons lose 3…

A: Isoelectronic is nothing but an atoms or ions having same number of electrons

Q: Which element when combined with Flourine, would most likely form an ionic compound?  bromine…

A: Ionic compounds are those compounds which are formed by the transfer of electrons between the…

Q: What name is used to indicate when the atoms or ions have all paired electrones: O a. ferromagnetic.…

A: In the given question we need to tell the name of the process called when the atoms have all paired…

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.