Why does a calcium atom become more stable when it loses two electron? For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).

Q: MCQ 13: The region around the nucleus which can be filled with one or two electrons is known as A.…

A: All atoms have the same number of electrons as protons. Negative electrons are attracted to the…

Q: Which element has the following configuration: [Xe]6s24f75d1[Xe]6s24f75d1? Enter the chemical symbol…

A: Explanation to the correct answer is given below

Q: What is the Pauli Exclusion Principle?

A: Electronic arrangement of atoms and molecules is given by several principles.

Q: P Question 7 What is the effective nuclear charge for lodine? O +53

A: Here, we have to calculate the effective nuclear charge for iodine.

Q: First lonization Energy (kilojoules/mole) He 2370 F Ne 800 1090 1400 1310 1680 2080 SI P CI Ar 790…

A: From the given table above we can conclude some trend ; 1) As we move from top to bottom in the…

Q: KE gained by one electron (e) (Ecot) = (1.602x10 C) (9.37 V) CV (three significant digits). Note:…

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

Q: Consider the following data for palladium: 106.42 mol atomic mass electronegativity 2.20 kJ 53.7 mol…

A: Given dataFor palladiumAtomic mass = 106.42 g/moleelectronegativity = 2.20electron affinity = 53.7…

Q: alculate the charge of the acting nucleus that the last valence electron senses in the cobalt cycle…

A: The charge (oxidation state) on an element can be decided by observing the electronic configuration…

Q: Question 2 Assume that an element's atomic number is 84. What is the most probable distance of the…

A: Radius of Bohr's first orbit is: r=n2h2ε0πmZe2 Where, r= radius of Bohr's orbit n= number of shell…

Q: Why is the energy of an electron in a BMO lower than in an AO?

A: In this question, we have to explain why is the energy of an electron in a BMO lower than in an AO.…

Q: 2s 1s 1s 1s 1s (H) (He) (Li*) (Li) A C

A:

Q: The number of electrons in the highest energy level of 20Ca is a. 2 b. 4 c. 5 d. 6 e.…

A: The atomic number of calcium is 20 and it is a group 2 element. The electronic configuration of…

Q: (3a-101-27) Would you agree to buy 1.23 x 102 gold atoms for $27? Explain why or why not, showing…

A: The number of gold atoms is = 1.23x1021 The cost of these gold atom is = $27 The current price of…

Q: What is the Pauli exclusion principle? Explain with an example?

A: Electronic arrangement of atoms and molecules is given by several principles.

Q: Atoms of Ca-38 and Ca-40 differ with respect to number of Group of answer choices neutrons orbitals…

A: To find: The atoms of Ca-38 and Ca-40 differ with respect to ??

Q: 3. The blue color in fireworks is due to copper (I) chloride , (CuCI), is heated at a temperature of…

A: Energy is related to wavelength by the following relation. Energy = hcλwhere,h=6.6×10-34Js=Planck's…

Q: What is the kinetic energy, in J, of (a) an Ar atom moving at a speed of 650 m/s, (b) a mole of Ar…

A:

Q: Write the atomic configuration of these elements. w solution K - 19 Sb - 51 U – 92 Sample below

A: Atomic configuration of an element represents the electron filling in each orbit.

Q: Write the atomic configuration of these elements. w solution Cu-29 Xe – 54 U – 92

A: Cu means copper. It has 29 electrons in it. According to aufbau principle - the lower energy levels…

Q: 4. How many electron deficits are there in an object with a charge of 7.5 x10- C? 18

A: Just apply  q= n×e  , where e is electronic charge and n is no. of electrons. And e= 1.6×10-19C  n =…

Q: The average mass of an oxygen atom is 5.3*10^ -26 kg . Calculate the kinetic energy of a mole of…

A:

Q: suo-ppy Help Last edit was seconds ago BIUA Arial 11 +. Roland Marris Ionization describes the…

A: Ionization energy of Noble gases:

Q: Draw a Born-Haber cycle for the formation of NaH(s) from its elements. Drag the appropriate labels…

A: Given,  The born-Haber cycle for the formation of NaH(s) is:

Q: How many distant nucleus pairs are in NH, molecule? a. 16 b. 1 C. 8 d. 6 c. 4 f. 2 9. 12 h. 3

A: Distant nucleus pairs can be calculated by considering number of nucleus.

Q: 100 10 0.1 Binding Energy (MJ/mol) The photoelectron spectrum for the element boron is represented…

A: Answer : (B) The spectrum shows a single electron in the 2p subshell

Q: Which of the following represents destructive interference? An electron An electron is like a wave…

A: Destructive interference occur , when the combining waves are out of phase with each other .

Q: Draw the Born-Haber cycle and use the data below for the formation of calcium chloride, to (ii)…

A: Let us calculate the  electron gain enthalpy of chlorine.

Q: what are likely possibilies for X if Xn + Cl -> XCl2 can you help explain how to solve this? Would…

A: Given:  Xn + Cl -> XCl2  To determine the likely possibilities for X

Q: Calculate the charge for the following: An aluminium atom An aluminium atom that has lost 3…

A: According to the Bartleby guidelines we have to answer only one question so please submit different…

Q: +] P. Bb Tests-CHE-100-01Y Spring 22 * Question Completion Status: QUESTION 9 Which is true…

A: Everything in the world wants to get maximum stability and minimum energy and for each element wants…

Q: Plz do Asap....!

A: For the given set of elements the highest energy level of the elements need to be listed, this can…

Q: Given these reactions, where X represents a generic metal or metalloid 1) H, (g) + 0,(g) H,O(g) AH,…

A: The ΔH of the desired reaction can be determined using Hess’s Law. According to Hess’s Law, if a…

Q: The numbers listed represent the first, second, and third energy levels, respectively. On this…

A: The given options represents the electronic configuration of atoms .  The electron configuration of…

Q: 1. The following is an electron transfer reaction between two atoms: Ag + O ----> Ag2+ + O²- Which…

A: Ground state electronic configuration of Ag is  4d9 5s2  Ground state electronic configuration of O…

Q: 1. The following is an electron transfer reaction between two atoms: + O ----> Ag2+ + O2- Which pair…

A: This is the concept of Electronic configuration

Q: Which of the following atoms has the greatest difference between IE3 and IE4? N Al P B

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

Q: Q/Choose between parentheses 1-Element like ....... the nucleus has a weaker attraction to its…

A: Solution :          Electrons are negatively charged particles that are present in the orbit around…

Q: Why when atom loses electrons it becomes positively and not negatively charged? For the toolbar,…

A: The atom is a neutral due to the presence of same number of protons and electrons. As we know that…

Q: Rank the elements by effective nuclear charge, Zerr, for a valence electron. Highest Zer Lowest Zerr…

A: Effective nuclear charge can be determined by following formula - Z* = Z - S Where  - Z* = effective…

Q: Consider the pollowing at oms: A BCOEF Number of electrons 888910 9 Number of n atrons 8910 9810 nch…

A: Isotopes are atoms of same element having same atomic number (number of protons ) but different mass…

Q: 82.Of the five elements Al, Cl, I, Na, Rb, which has the most exothermic reaction? (E represents an…

A:

Q: 5. Predict the missing value (?) for radioactive radium (Ra). The atomic radius, density, and…

A:

Q: Draw the Born-Haber cycle and use the data below for the formation of calcium chloride, to (ii)…

A: Let us draw  for Calcium chloride.

Q: What are the missing parts: 1) 0, 2) Zn, HOẶe 1)0, 2) Zn, HOẶC 1)0, 2) Zn, HOẶC

A:

Q: our friend Teresa from Mrs.X class is having trouble understanding how to draw the Bohr Rutherford…

A: Bohr Rutherford diagram for Nitrogen

Q: The stable outer electronic configuration for elements except hydrogen and helium is ns np O b. ns?…

A: The electronic configuration is a way to represent the distribution of electron density in an atomic…

Q: (3a-104-17) Would you agree to buy 1.23 x 1021 platinum atoms for $17? Explain why or why not,…

A: Given : Number of atoms = 1.23 X 1021 atom Cost of purchase = $17 And current price of platinum = $…

Q: O C3H8 molecule Question 41 I. Which could describe the likely location for the 28th electron added…

A: There are different subshell in which electron are located. So probability of presence of eletron…

Q: ct one: a. Vibration of nucleus b. Movement of electron around the nuc- c. Total size of electron…

A: Size of atom is determined by outermost shell electrons.  So, movement of electrons around the…