Which of the following has the same number of outer shell electrons, and therefore behaves similarly, as Krypton (Kr)? a) Lithium (Li) • b) Beryllium (Be) 20 21 • c) Neon (Ne) 23 24 • d) Copper (Cu)

Q: Which of the following element will have the greatest difference between IE2 and IE3? He Be Mg Ca

A:

Q: atom of which of the following elements has the largest ionization energy? Sb As Ві P N

A: Ionization enthalpy of 15th group elements. Nitrogen has high ionization enthalpy. N = 1402 ,P=…

Q: Write the electron configuration of the following elements: • Arsenic • Chlorine (with a charge of…

A:

Q: write the full electron confuguration for zinc

A: Zinc lies in d-block elements in 3d series with d orbital fully filled thus making it stable.

Q: 1. An element has a low ionization energy and a low electron affinity. What is it most likely to be?…

A:

Q: Effective nuclear charge of: 3p electrons in chromium 3s electrons in cobalt 2s electrons in…

A: Zeff can be calculated by slaters Rule in any element .          Formula for Zeff   = atomic Number…

Q: Which ion would you expect to be smaller in size—I− or Br−? Explain.

A: Among the elements in the periodic table, the size of the elements increases as we go down the…

Q: Which pair of elements below would be the least similar in their chemical properties?  a) Be-Al…

A: Element in the same group have similar chemical properties. Also same pair of elements shows…

Q: The first five ionization energies of an element are as follows (in kJ/mol): 577.9, 1820, 2750,…

A: Interpretation: From the given first five ionization energies of an element, the most likely to have…

Q: ow many valence electrons are there in group 2 elements? A 1 B 2 C 4 D 8

A: Group 2  element are also known as alkaline earth metal.beryllium ,magnesium ,calcium,…

Q: Write the condensed ground-state electron configuration for each of the following elements

A: Electrons are filled in the sub-shells in increasing order of their energy i.e. lower energy…

Q: Which of the following metals would be expected to have the smallest atomic radius? A) Cesium (Cs)…

A: In periodic table, on moving left-right the element's electronegativity as well as atomic number…

Q: Identify the sub-shell in which electrons with the following quantum numbers are found: n=2, I=0 3p…

A: n = 2  L = 0  Identify the sub - shell which have above quantum number = ?

Q: Which of the following atoms have the least metallic character Li Cs Rb K Na

A: We are to find the element with least metallic character among the given Li Cs Rb K Na

Q: 3) Which of the following is isoelectronic with Mg? Ar, K*, S² or Ne s2-

A: The ions or atoms which possess the identical electron configuration are termed as isoelectronic…

Q: The first four ionization energies of a certain element are as follows (in kJ/mol): 577, 1820, 2740,…

A: Ionization energy:  It is the energy required to remove an electron from an atom in gas phase.

Q: The tirst ionization energies (in kJ/mol) for the elements in the 3rd row of the periodic table (PT)…

A: Applying concept of periodic properties.

Q: Tennessine, element 117, is the most recently discovered element in the periodic table. Assuming it…

A: It is given that Tennessine is an element having an atomic number of 117 and is the recently…

Q: Identify the sub-shell in which electrons with the following quantum numbers are found: n=1, l=0 O…

A: We are to find out the subshell in which the electrons n=1, l=0 can be found.

Q: 4) How many valence and core electrons does each of the elements above have? # Valence electrons a)…

A: The outermost electrons of an atom are called the valence electrons. In-order to find out the…

Q: 5) Which of the following elements has the largest number of electrons in n = 3? Na, Al, Si, Cl, Ar,…

A: "Electronic configuration" is described by arranging electrons of given atom/element in their atomic…

Q: Aluminum (Al) and silicon (Si) are in the same row (period) on the periodic table. The atomic radius…

A: We have to find out the reason why the aluminum has larger size compared to silicon and  size…

Q: Using the data in the tables and Coulomb's law, calculate the energy change for this reaction (per…

A:

Q: However, the ionization energy of boron is lower than that of beryllium, and the ionization energy…

A: Ionization means the removal of electrons from the valance subshell. Removal of electrons from a…

Q: 8 - Which of the following is incorrect?   A) The electron configuration of the element Sr ends…

A:

Q: 15. (a) b) c) d) Identify the element that is described by the following information. Refer to a…

A:

Q: Using the data in the tables and Coulomb's law, calculate the energy change for this reaction (per…

A: We have ask here to calculate energy change for the reaction of  Ca(g)  + S(s)  -----> CaS(g)  By…

Q: Which of the following atoms has the largest radius? a) F b)Cl c)Li d) Na

A: Which of the following atoms has the largest radius?  a) F b)Cl  c)Li d) Na

Q: Illustrate the electron spin quantum number of Carbon

A: Quantum numbers are defined as set of numbers which describe the energy and position of electrons in…

Q: Identify the sub-shell in which electrons with the following quantum numbers are found: n=3, I=1 O…

A: Given that, n=3 l=1

Q: An unknown element X is a nonmetal and has a valence electron configuration of ns^2np^3. Explain all…

A: We will count valence electrons and then answer questions one by one.

Q: Write the standard isotopic notation for the following atom a) 3p, 3e , 3n

A: • The values provided in the question are:-     i) Number of protons in an atom = 3  ii) Number of…