3. What is the effective nuclear charge on 3(a) the outer two electrons of B?  3(b) the inner two electrons of B?  3(c) Explain the four ionization energies of B being 801, 2427, 3660 and 25025kJ/mol?

Q: Sort each of the following elements by effective nuclear charge, Zeff , from smallest to largest:…

A: In an atom, the proton and electrons are situated in the nucleus. The positively charged nucleus…

Q: n its atomic radius equals 0.175 nm.

A:

Q: QUESTION 15 Which of the following is diamagnetic? 13AI 15P 24Cr 48Cd 83Bİ QUESTION 16 Which ion has…

A:

Q: Why are the ionization energies of the alkali metals in the order Li >, Na > K > Rb?

A: ANSWER IS DISCUSSED BELOW :

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A: Given :- electron configuration of an element = [Xe]6s14f145d9  To identify :- class of that element

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A: Given valence electronic configuration 1. 4s2 4p4 2. 3s1

Q: Which statement is true regarding Slater's rules and the calculation of effective nuclear charge?

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Q: Which of the following elements is an halogen?

A: The elements which belong to the 17th group of the modern periodic table are called halogens. The…

Q: Which set of elements below contains, respectively, an alkali metal, a halogen, and a transition…

A: Alkali Metals are Group 1 elements. Halogens are Group 17 elements. Transition metals are d-block…

Q: Which one of the following atoms has the largest effective nuclear charge, Zeff? A. C B. N C. O…

A: Given that

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Q: Explain the similarities and differences as compared to element 118 Og if a new element was…

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A: a)

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

Q: 7.8 What is a main group element? Give names and symbols of four main group elements.

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Q: Arrange the following seven atoms or ions in order of size,from smallest to largest: K, F+, Rb,…

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Q: 2. Define shielding and effective nuclear charge. What is the connection between the two?

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Q: 8.48 (a) Why do successive IEs of a given element always in- crease? (b) When the difference between…

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Q: Question 4 The shielding constant for He (1s)² is o.31. Calculate the following: a) The energy of…

A: Solution

Q: Antimony belongs to Group SA. What is its correct a. b. Sb-

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A:

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Q: on N atom in NO3¯ are 1,3 .A 4,0 .B 3,1 .C .D 2,2

A:

Q: Among Cl-, Ar, K+, Ca2+, Br-, Kr, Rb+, and Sr2+, which one has the largest radius?

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Q: D. Match items from column (A) with the suitable one from column (B) (A) (В) Alkaline earth metals 1…

A: The table is given is based on the periodic table.

Q: isoelectronic

A:

Q: xplain the characteristics of Group X elements

A: This question is related to alkali metals.

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Q: What is the spin quantum number, ms, for Uqn-140’s last placed electron?

A:

Q: 8. lonization of which of the following elements is most energetically costly? A. Ne В. Na1+ C. Mg2+…

A: Ionization energy is the energy required to remove an electron from the outermost shell of an…

Q: (c) Explain why the d block elements zinc and scandium are not transition elements. (

A: Sc and Zn both are d-block elements .

Q: How many electrons are present in the d sublevel of a Fe^ 3+ ?

A: Fe (iron) Atomic number = ki The electronic configuration of Fe  = 1s22s22p63s23p64s23d6    In the…

Q: the element that has a valence electron configuration 3s23p5 is

A:

Q: (1) What is the name of the element with a valence electron configuration of 4s²4p*? (2) What is the…

A:

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: Q4: What is the effective nuclear charge (52TE). on electrons in a 4s, 5s and 4d for tellurium…

A: Electronic Configuration of Te, Tellurium =52 = 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 4p6, 4d10,5s2, 5p4…