TABLE 7.4 Some Properties of the Alkali Metals Melting Point (°C) Density (g/cm³) Atomic Electron Radius (Å) (kJ/mol) Configuration Element Lithium [He]2s' 181 0.53 1.28 520 0.97 496 Sodium 98 1.66 [Ne]3s! Potassium 63 0.86 2.03 419 [Ar]4s! Rubidium 39 1.53 2.20 403 [Kr]5s' 1.88 2.44 Cesium 28 376 [Xe]6s!

Q: What is the wavelength of light (in nm) emitted when an electron transitions from n = 5 to n = 2 in…

A: Given, n1 = 2 and n2 = 5 According to the formula, 1λ = R(1n12 -1n22 )  Where R = 109678 cm-1

Q: what is the ratio of ground state energy of an electron moving in Be^+3 and to that of one moving in…

A: The energy of an electron (E) present in hydrogen-like atoms is calculated using equation (1) in…

Q: The first ionization energy of sodium is 497 kJ/mol. Write the chemical equation which represents…

A: Ionization energy means the energy required to remove an electron from isolated gaseous atom. Na…

Q: Describe and account for the variation of first ionizationenergies along Period 2 of the periodic…

A: Describe and account for the variation of first ionization energies along with Period 2 of the…

Q: 3- The electron configurations of two different atoms are: ls²2s²2p° and 1s°2s²2p°3s'. The first…

A: The amount of energy required to eject the most loosely bound electron of an isolated atom in the…

Q: The actual ionization energy of He is 2372.3 kJ/mol. Which of the following can be said about the…

A: We need to describe the shielding effect in helium.

Q: The ionization energy for a H atom 1s electron is 2.18x10-18 J and that for a 2p electron is…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: A naturally occurring fblock element, M, forms an anionic nitrate [M(NO3)6]² , M(acac)4 and an oxide…

A: Those elements of the periodic table which have their last electrons in the f-orbital are known as…

Q: Suppose that 2.136 × 10-18 J is absorbed by the electron of a hydrogen atom in the n = 1 energy…

A:

Q: If the ground state electron configuration of an element is [Ne] 3s23p1, what is the typical charge…

A: Given - ground state electronic configuration = [Ne]3s23p1

Q: 1. The Ionization Energy of hydrogen is the energy required for the process: H + energy --> H+ +…

A:

Q: The first ionization enthalpy for Li is 520 kJ mol^-1. This value corresponds to complete removal of…

A: Given - first Ionization energy of Li = 520 KJ/ mol To find - effective nuclear charge felt by 2s…

Q: Write the subshell electron configuration (i.e.1s² 2s², etc.) for the Si14 atom.

A:

Q: List the following ions in order of increasing ionic radius: N3, Na *, F,Mg",0?.

A: The order of ionic radius : N3- , Na+, F- , Mg 2+ , O2-

Q: Q1 The following table shows the first five ionisation energies of the elements A and Z in kJ mol-¹.…

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

Q: Write the quantum sets for the 3 3p electrons for phosphorus?

A: The term quantum numbers refer to a set of numerical values which can give the ideas about the…

Q: Calculate the change in energy (in Joules) when an electron transition from n=4 to n=2 in a hydrogen…

A: The electronic energy levels in an atom are quantized and when an electron undergoes a transition…

Q: 2. Explain the following phenomena on the basis of electron configuration. i) Fluorine forms an…

A:

Q: What is the relationship between the ionization energy of an anion with a -1 charge, such as F−, and…

A: Electron affinity:It is the energy released when an electron adds to the neutral gaseous atom (F-).…

Q: What is the electron transition that represents ionization of electron in a H-atom? Calculate the…

A: Since the atomic number of Hydrogen atom is 1, it has only 1 electron. This electron lies in the…

Q: A hyavogen-ike only one electron. The energleS of the election in a hydrogenlike ion are given by:…

A: We are given with general formula of En for Be3+

Q: What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency…

A: The Kinetic Energy of the Emitted Electrons can be calculated as -

Q: Explain which has the higher ionization energy: O or Ne?

A: Hello. Since your question has multiple questions, we will solve the first question for you. If you…

Q: Which of the following elements has the ground-state electron configuration 1s 2s²2p5?

A: The electrons, protons, and neutrons are the basic constituents of an atom. They help in determining…

Q: 1. The following is an electron transfer reaction between two atoms: Cu + O ----> Cu2+ + O2- Which…

A: Given,

Q: If the radius of atom X is greater than the radius of atom Y, then it is also likely that

A: Given that the radius of the atom X is greater than the atom Y

Q: Write the symbol for the monatomic ion that has a charge of –1 and the condensed electron…

A: An electronic configuration of an atom shows the distribution of electrons in different orbitals.…

Q: The alkali metal with an electron configuration of [Xe] 6s¹ is:

A:

Q: Na+, Ne, O2-, Mg2+, F- Which isthe smallest in size? Which has the lowest ionization energy?

A: Electronic configuration of the given ions/elements is as follows. Na+  =1s22s22p6Ne…

Q: What is the relationship between the ionization energy of ananion with a 1- charge such as F- and…

A: The long form of periodic table is the arrangement of all elements in the increasing order of their…

Q: Which of the following chemical equations is connected tothe definitions of (a) the first ionization…

A: Ionization energy is the amount of energy required to remove an electron from an isolated gaseous…

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

A: In the case of sodium (Na) atom, a valence electron is present in 3s-orbital and the total number of…

Q: What is the energy, in J, of light that must be absorbed by a hydrogen atom to transition an…

A: The emission spectrum of the atomic hydrogen atom has been divided into a number of spectral series,…

Q: The 2s and 2p energy levels are different. Which of thefollowing is the best explanation for why…

A: It is given that the 2s and 2p energy levels are different, the best explanation from the given…

Q: element X has an electron affinity of 295.3 kJ/mol and the following ionization energies (in…

A: From the given data, the ionization energy increases indicates the energy requires more to remove…

Q: Write any two multiplicities of higher energy in the form  2s+1L J, giving a diagrammatic…

A: The term 2s+1L is an atomic term where, S is the total spin angular momentum for each individual…

Q: the solid state

A: In this question, we have to tell that when the temperature is below, what are the changes in the…

Q: The first ionization energy of helium is 2370 kJ mol¯1, the highest for any element. (a) Define…

A: a. The ionization energy of a chemical species (an atom or molecule), is the energy required to…

Q: The energy required to ionize rubidium is 403 kJ/mol. What wavelength of light, in units of nm, is…

A: We are required to calculate the wavelength of light required to ionize the rubidium given that it…

Q: Determine the energy change associated with the transition from n=2 to n=5 in the hydrogen atom.?

A: Initial energy level = 2  Final energy level = 5  RH , rydberg constant = 2.18*10-18 J

Q: The ionization energies for removing successive electrons from sodium are 496 kJ/mol,

A:

Q: The electron configuration for vanadium (V) is O [Ar] 4s 3d³

A: The distribution of electrons in an element's atomic orbitals is described by its electron…

Q: Radius of an atomic nucles is of the order 2.2fm. What is the minimum energy that an electron should…

A:

Q: The energy of an electron in a one-electron atom or ionequals 1-2.18 * 10-18 J2 aZ2n2 b, where Z is…

A: Ionization energy is the amount of energy required to exit an electron from its valence shell to the…

Q: Strontium has a visible line in its spectrum at 539.8 nm. What is its energy in kJ/mol?

A: λ= 539.8 nm = 5.398x10-7 m1 nm = 1x10-9 mThen use the equationE = hν = hc/λwhere h = Planck's…

Q: What is the energy, in J, of light that must be absorbed by a hydrogen atom to transition an…

A: We need to determine the energy that must be absorbed by a hydrogen atom to transition an electron…

Q: Boron, atomic number 5, occurs naturally as two isotopes, 10B and 11B, with natural abundances of…

A: Hi, Since you have posted multiple sub part questions as per our guidelines we will answer first…