Why are elements at the extreme left and extreme right the most reactive?

Q: What is the total number of valence electrons for IF4-?

A: a/c to periodic table  iodine, fluorine (halogen family) have 7 valence electrons ( ns2 np5)  note =…

Q: Define the term, Chemical Bond?

A: Chemical Bond: Chemical bond is a bond that holds atoms together. It is force that binds ions or…

Q: The electrons are the outer electrons and are involved in bonding.

A: The electrons on the outermost energy level of the atom are called valence electrons. The valence…

Q: Question attached

A: Groups and Periods in the periodic table The modern periodic table has been divided in a criss-cross…

Q: Explain why fluorine is the most reactive of all theelements.

A: Explain why fluorine is the most reactive of all the elements.

Q: Use the concept polarity of water and the basic composition of the body to explain why the polarity…

A: Electronegativity difference among constituent atoms is responsible for the development of charges…

Q: Neon has eight valence electrons in its outer shell. This means it does not easily react with other…

A: Neon →  10Ne       atomic Number of Neon=10           It contain Electrons=10Electronic…

Q: Describe how a Lewis structureshows a covalent bond.

A: How a Lewis structure shows a covalent bond has to be given,

Q: How does ionic radius affect the strength of an ionic bond and why?

A: An ionic radius that affects the strength of an ionic bond has to be explained below.

Q: Which is more electronegative, oxygen or sulfur?

A: Electronegativity is the tendency of an atom to pull the shared pair of electrons towards itself. It…

Q: Why do atoms always tend to combine?

A:

Q: Which of these statements are NOT true about the interpretation of Lewis structures.

A: Lewis structure (i) Show how the electrons are arranged around individual atoms in a molecule. (ii)…

Q: bond is the least polar?

A: Electronegativity of carbon 2.55 Electronegativity of sulfur 2.58 Electronegativity of nitrogen 3.04…

Q: What are the characteristics of an covalent chemical bond?

A: we have to explain the characteristics of a covalent chemical bond

Q: What are electrocovalent compounds

A: We are asked to define electrovalent compounds.

Q: number of unshared pairs at atom a, b, and c?

A: Lone pair is defined as a pair of valence electrons that are not shared with another atom in a…

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

A: We are to discuss why octet rule is always followed by second row(group II) elements without any…

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

A: Given that -  The enthalpy of formation of MX , ∆Hf° = -517 kJ/mol  The enthalpy of sublimation of M…

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

A: The energy released when 1 mole or solid lattice is formed from the required number of gaseous…

Q: What is a metallic bond, as opposed to an ordinary covalent bond?

A: Metallic Bond:

Q: if magnesium were to form a positive ion by losing its valance electrons, what charged ion would…

A: Given: Magnesium element.

Q: Why is salt an ionic bond?

A: About Salt

Q: State the process of Calculating formal charge ?

A: Assigned charge of an atom in a molecule is called formal charge.

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: Electron affinity is -349 kJ mol-1. Electron affinity is +349 kJ mol-1. Electron affinity is -142 kJ…

A: The amount of energy released when one mole of gaseous, neutral atoms accept an electron to form an…

Q: Does a metal and non metal make a Ionic Bond, Covalent Bond, or both?

A: A metal is a substance that when freshly prepared, polished, or fractured, shows a lustrous…

Q: disilicon pentaselenide,  is it ionic or covalent?

A: Ionic bond is formed when there is large difference in electronegativity value of two atoms.…

Q: Arrange the following elements in order of increasing electronegativity: lead, bismuth, thallium,…

A: Electronegativity is the tendency of an atom to attract a shared pair of electron.

Q: What are the numbers of unshaired pairs at atoms a, b, and c?

A: The compounds given are, 1) 2)

Q: Consider the following information. • The enthalpy of formation of SrO is A H; = -592.0 kJ/mol. •…

A: Given values are: ∆H°f (SrO) = -592.O kJ/mol∆Hsub (Sr) = 164.4 kJ/molIE1 (Sr) = 549 kJ/molIE2 (Sr) =…

Q: In order to achieve an electron configuration that is isoelectric with a noble gas, non-metals tend…

A: The electronic configuration of noble gases has a complete valance shell. Due to the complete…

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

A: The valence electron around the atom is designated using the lewis structure where each dot…

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

A: The element can be identify on the basis of valence electrons and period number.

Q: What kind of element gains electron after ionic bonding?

A: Concept is based on Ionic Bond.

Q: Which of the following is true about electrons in ionic bonds? Electron energy is at a maximum with…

A: To consider the true statements about an ionic bond:  Electron energy is at a maximum with a…

Q: The bonds between technetium and sulfur are predicted to be?

A: Technetuum and sulphur form colloidal technician is a d block element which is a metal and sulphur…

Q: Select the more electronegative element in this pair. O Be

A: Electronegativity is the tendency of an atom to attract shared pair of electrons towards itself. It…

Q: An atom of sulfur (S) achieves an octet by gaining electrons. What is the electron configuration of…

A: We need to identify the electronic configuration of sulfur ion.

Q: Geologists have a rule of thumb: when molten rock coolsand solidifies, crystals of compounds with…

A: Interpretation - crystals of compound with the smallest lattice energies appear at the bottom of the…

Q: Neon has eight valence electrons in its outer shell. This means it does not easily react with other…

A: Neon is a noble gas and it has a highly stable s2p6 electronic configuration in the outer space i.e.…

Q: explain how the valence configurations of atoms are related to the atom's similarity in reactivity

A: In a chemical reaction the valance electrons decide the reactivity of the atom. The no of valence…

Q: What Is a Chemical Bond?

A: A chemical bond is formed due to attraction between atoms, ions or molecules that enables the…

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.