How many unpaired electrons are present in the ground state of an atom from each of the following groups?(a) 4A(14)(b) 7A(17)(c) 1A(1)(d) 6A(16)

Q: IF an unknown element has an atomic mass of 119 and a quantum number sequence of 5, 1, 0, +1/2…

A: Given that -  Atomic mass of element = 119  And, the sequence of all quantum numbers is = 5,1,0,+1/2…

Q: Which of the following informatiön 18 not correct about principal quantum number (n) :- (1) As value…

A: The address of an e- in an atom is described by the set of four quantum numbers n, l, m, s. These…

Q: Which of the following types of electrons penetrates most toward the nucleus and therefore has the…

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Q: 49. Write the full electron configuration (1s22s², etc.) for each of the following elements. a.…

A: The electron configuration of any element describes that how the distribution of Electron in its…

Q: If a spark promotes the electron in a hydrogen atom from Bohr orbit with n=3 to the orbit with n=6,…

A:

Q: State whether each of the following attempts to write an electron configuration is correct or not.…

A: The given configuration is not correct . Electrons filling in orbitals are done by afbau's principle…

Q: 6.99 Discuss the current view of the correctness of the following statements. (a) The electron in…

A: To find: The correctness of the given statements

Q: Which among the following represents the subshell with n=5 and I=3? 5p 5d 4d 5f

A: Principle Quantum no = n= 5 Orbital Angular momentum Quantum no = l = 3 Subshell = to be determined…

Q: Which element has 71 neutrons? a) 222Rn b) 146Nd c) 159Sm d) 140Ce e) 121Sn

A: We can find neutrons by subtracting number of protons form mass number.  No.of neutrons=mass…

Q: Consider a helium atom(m=6.6m10^-27 kg) that is confined to mobility along a line with a length of…

A: Given: mass of helium atom = 6.6×10-27 kg speed = 1500 m/s Length = 12 Ao

Q: Which of the following statements is consistent with the electron configuration 1s22s22p63s23p6? a)…

A: Shell: A shell is the well-defined circular that followed by electrons around an atom’s…

Q: How much energy is required to remove an electron from the second shell 1 ДЕ -(-2.178 х 1о1 J) 2 n.…

A: Ionization energy: It is the energy required to remove the electron from its outermost shell from…

Q: - Which of the following is not considered as isoelectronic particles? _ (a) ,N3 , 80-2, (b) 80-2 ,…

A:

Q: 7.125 How do ionization energies change with increasing atomic number (a) down a group of elements…

A: Ionisation energy (IE) : The ionisation energy is defined as the amount of energy to remove the most…

Q: Predict the ionization energy of Li2+ given that the ionization energy of He+ is 54.36 eV.

A: The ionization energy He+ is 54.36 eV The electronic configuration of Li2+ is 1s1 The electronic…

Q: Identify each element below, and give the symbols of the other elements in its group:(a) [He] 2s22p1…

A: For the given electronic configurations , the correct element has to be identified and symbol of the…

Q: In the following questions identify the elements of the periodic table by their atomic numbers.…

A: Ans

Q: [References] at is the maximum number of electrons that can be identified with each of following…

A: If, l=0              s-orbital l=1                  p-orbital l=2                  d-orbital l=3…

Q: What atoms have the configuration (a) 1s22s22p5, (b) 1s22s22p63s2, (c) 3s23p6? Explain.

A: The electron configuration of an element describes how electrons are distributed in its atomic…

Q: 6.90 Define the following terms and give an example of each: lanthanides, actinides.

A: The given terms lanthanides and actinides has to be defined.

Q: What is the e/m ratio of an electron?

A: e = charge of an electron, m= mass of electron  J.J.Thomson was able to determine the e/m ratio by…

Q: 4. Deuterium is an isotope of hydrogen with 1 proton and 1 neutron in its nucleus (deuterium = ²H).…

A: Q - Deuterium is an isotope of hydrogen with 1 proton and 1 neutron in its nucleus (deuterium = 2H).…

Q: 13! Which of the following statements is correct about the effective nuclear charge (Zet)? A) Zeff…

A:

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: l= 1, ml, = 0 (b) n = 2, l= 1, ml, = -1 (c) n= 3, l= 1, ml, = 0, ms = ½

A:

Q: An electron moving at 2.90X10T m/s is found 7.04x10- n what is the mass of the to have á wavieleng…

A: The velocity of the electron, v = 2.90×104 m/s Wavelength of the electron, λ = 7.04×10-9 m Mass of…

Q: What is the identity of the element with the following electron configuration:  1s22s22p63s23p1

A: Given that, the electron configuration of the element is---- 1s2 2s2 2p6 3s2 3p1 So, the element…

Q: How many unpaired electrons are present in the ground state of an atom from each of the following…

A: a. In ground state 2A group, there is no unpaired electron. b. In ground state 5A group, there are…

Q: Identify each element below, and give the symbols of the other elements in its group:(a) [He]…

A: In the periodic table, every element has the atomic number. The atomic number is defined as the…

Q: Normal Hydrogen atom is to be raised to the fourth level by means of radiation, the wavelength of…

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Q: Which of the following ground state electron configuration represent a violation of the Aufbau…

A: Aufbau principle: Electrons in the ground state of an atom are filled in the lowest energy orbitals…

Q: Which of the following statements is correct for an electron that has the quanutm numbers n = 4 and…

A: the electron must have a spin quantum number ms = +1/2 is the correct answer for this particular…

Q: 1. What is the cause of the atomic emission spectrum of an element?

A: Given: To give the causes of atomic emission spectrum of an element

Q: Explain the variation in the ionization energies of carbon, asdisplayed in this graph:

A: The atomic number of carbon is 6. Therefore, the electronic configuration of carbon is,

Q: What is the kinetic energy acquired by the electron in hydrogen atom, if it absorbs a light…

A:

Q: Calculate the frequency of the radiation emitted when an electron in a hydrogen atom drops from the…

A:

Q: Consider a helium atom(m=6.6m10^-27 kg) that is confined to mobility along a line with a length of…

A:

Q: 4. Which among the shells given below is closest to the nucleus? a. М с. L b. K d. O 5. The d…

A: Answers of 4,5,6

Q: Which of these spheres represents F, which represents Br,and which represents Br-?

A: We are given the elements F and Br they belong to the group-17 and they are known as the halogens.…

Q: Arrange the following groups of atoms in order of increasing size. (Enter multiple answers as a…

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Q: Rank the following atoms in order of decreasing size (i.e., largest to smallest): Rb, F, Mg, В, N.

A: We know that periodic trend for atomic sizes : In period : The size of atoms decreases because of…

Q: An atom has an electron configuration of 1s22s22p6. Which of the following are possible quantum…

A:

Q: What is the maximum number of electrons that can be found with the main quantum number n = 4 in a…

A: Given -> n = 4

Q: How many unpaired electrons are present in the ground state of an atom from each of the following…

A: An Unpaired electron is an electron that is present in the orbital of an atom singly rather than a…

Q: In a single atom, what is the maximum number of electrons which can have quantum number n = 4?…

A: Principle quantum number, n = 4