(b) List some properties of Group 1 elements which indicate they are all metals. (c) What valence do all Group 1 elements exhibit in their compounds? (a) Write the names and symbols of the elements of Group 2.

Q: Why do helium and lithium exhibit very different chemical behavior, even though they differ by only…

A:

Q: Consider the first ionization energy of neon and the electronaffinity of fluorine. (a) Write…

A: Ionization energy is the amount of energy which is needed to remove an electron from the neutral…

Q: What is the basis in assigning a central atom?

A: The basis on which central atom is assigned has to be given.

Q: Despite the expected decrease in atomic size, there is an un-expected drop in the first ionization…

A: Ionization energy is the energy that is required to remove an electron from a gaseous atom or ion to…

Q: Bromine is used in the manufacture of disinfectant products, it has a very strong oxidizing…

A:

Q: Group the electronic configurations of neutral elements in sets according to those you would expect…

A: The chemical properties of elements depends on number of electrons present in valence shell…

Q: Write the electron configurations for (a) Ca2+, (b) Co3+, and (c) S2-.

A: Calcium loss 2 electrons and cobalt loss 3 electrons and sulphur gains 2 electrons

Q: What is the valence electron configu.ration for Group SA (lS) elements?Metallic character increases…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Define the term disproportionation?

A: The term disproportionation has to be explained.

Q: (c) The standard enthalpy of formation of O(g) is 249 kJ/mol. Calculate the wavelength (in nm) of…

A: Given data Enthalpy of formation of O (g) = 249 KJ/mole It means  12 O2 (g) → O (g)          ∆H=249…

Q: The energy required to break one mole of hydrogen bonds in H2 (g) is 436 kJ. What is the longest…

A: Energy of photon is given by  E=hc÷lmbda Photon is defined as energy of Photon which is required to…

Q: Givethreeexamplesofionsthatwouldbeisoelectronicwithneon1s​ 2​ 2s​ 2​ 2p​ 6

A: The atomic number of neon is 10, so neon contains 10 protons and 10 electrons in the ground state.…

Q: Which of the following have the largest first ionization energy, IE,? O B O Ga O Br O i

A: Ionisation energy is defined as the energy required to remove electron from the gaseous form of the…

Q: How are measurements of paramagnetism used to support electron configurations derived…

A: How are measurements of paramagnetism used to support electron configurations derived…

Q: Fluorine lies between oxygen and neon in Period 2. Whereas atomic sizes and ionization energies of…

A: The given data: The given elements are F, O, and Ne. To determine = The change in their…

Q: كيم کيمياء The basic character of metal oxides diminishes with decreasing size and increasing charge…

A: True.

Q: a) what is meant by the term polarizability? (b) Which of the following atoms would you expect to be…

A: Polarizability is tendency of atom to distort it's electron cloud. When an anion or atom experience…

Q: What is the periodic trend in ionic size for the cations of these alkaline earth elements: Mg2+,…

A: Atomic size tends to decreases as we move down group. Cations have lesser number of electrons than…

Q: Explain the group IV and V cations. Draw their schematic diagram.

A: Elements in the same group have similar outermost configuration and hence ions they form have…

Q: Diiodine pentaoxide (I₂O₅) was discovered by JosephGay-Lussac in 1813, but its structure was unknown…

A: a) The precursor, oxoacid is iodic acid and the reaction for formation of the oxide is given as…

Q: In what ways are the electronic structures of the group 14 (4A) elements similar? In what ways are…

A: Ans. Group 14 elements have same valence electrons i.e valency. Group 14 elements have different…

Q: Why catenation property is most remarkable in the case of carbon?

A: Catenation:The property of linkage of atoms of same element forming a longer chain is known as…

Q: The first ionization energy of the oxygen molecule is the energyrequired for the following…

A: First ionization energy of oxygen molecule is 1175 kJ/mol. This energy is similar to the first…

Q: Consider the Mg2+, Cl-, K+, and Se2- ions. The four spheresbelow represent these four ions, scaled…

A: The given ions are Mg2+, Cl-, K+, and Se2-.  The order would be Mg2+, K+, Cl-, Se2- from smallest to…

Q: Group the electronic configurations of neutral elements in sets according to those you would expect…

A: The element with electronic configuration 1s2 2s2 2p6 3s2 3p3  and the element with electronic…

Q: Explain the theoretical aspect of the separation of Group IIA cations from Group IIB.

A: Cations of group II are known as Copper arsenic group in qualitative analysis. This group II has…

Q: How many electrons occur in the valence level of Group 3A (13) and 3B (3) elements? Why are they…

A: Group 13 (IIIA) consists of boron, aluminum, gallium, indium, and thallium.  All elements in this…

Q: What is the electron configuration of Co²⁺?

A:

Q: Write the electronic configuration of 3 Li and 26Fe and explain the possible valency they can…

A: filling of electron in orbital of element follows pauli exclusion principles.

Q: Why does the ionization enthalpy gradually decreases in a group?

A: In a group of the periodic table,         The atomic size increases from top to bottom.         The…

Q: Please arrange S²², CI", Se², and Br¯ in order of increasing ionic radius.

A: Interpretation -  To arrange the S2- , Cl- , Se2-  and  Br-  in order of increasing ionic radius -…

Q: element cobalt in battery technology? b)What are the physical properties of the element cobalt in…

A:

Q: If the molecule XY, which has an enthalpy of ionization of 1,500 kJ/mol as per the reaction below,…

A: Given the ionization enthalpy of the molecule, XY = 1500 kJ/mol First, we have to convert the…

Q: What are the connections between reactivity and ionization energy/electron affinity trends? Why do…

A: There are many trends in organic chemistry. These trends are atomic size, reactivity, metallic…

Q: Bromine is used in the manufacture of disinfectant products, it has a very strong oxidizing…

A: Electron affinity is the amount of energy released when a neutral atom in its gaseous state accepts…

Q: (a) Why does xenon react with fluorine, whereas neon doesnot? (b) Using appropriate reference…

A: a).

Q: (b) Is boron a metal or a non-metal? Give reasons for your answer. (c) Why is aluminium a useful…

A: Element can be classified as metal and non metal

Q: How many electrons does a halogen atom need to com-plete its octet? Give examples of the ways a Cl…

A: How many electrons does a halogen atom need to complete its octet? Give examples of the ways a Cl…

Q: Explain why N2 2+ is diamagnetic, while O2 4+, which has the same number of valence electrons, is…

A: The Lewis structure does not give any idea about molecular geometry but it purposed the distribution…

Q: Explain why Xe, and to a limited extent Kr, form com-pounds, where as He, Ne, and Ar do not.

A: He, Ne, Ar, Kr and Xe all are of group 18 elements, they are also known as noble gas elements due to…

Q: Why is it not possible to displace fluorine from metallic fluorides by any other halogens? Explain…

A: It is not possible to displace of fluorine from metallic fluorides by any other halogens reason is…

Q: Group 7A. What properties of hydrogen justify each of these placements?

A: Introduction :  Hydrogen is the first element in the periodic table, it is the smallest element…

Q: Ionic hydrides are primarily compounds of hydrogen and nonmetals, in which the bonds are evidently…

A: Ionic hydrides are primarily compounds of hydrogen and nonmetals,   The above statement is not fully…

Q: Of the elements Be, C, Cl, Sb, and Cs, which is most likely to participate in extensive p bonding,?

A: C is most likely to participate in extensive p bonding.

Q: Write the molecular formula and Lewis structure for eachof the following oxides of nitrogen:

A: Since they are oxides of nitrogen ,  Blue color represents = nitrogen Red color represents = oxygen…