Which has the smallest Zeff for its valence electrons? A) F B) Cl C) Br D)...

Which has the smallest Zeff for its valence electrons?
A) F
B) Cl
C) Br
D) I
E) A-D all have the same Zeff

Expert Solution

The effective nuclear charge (often symbolized as Z_eff or Z*) is the net positive charge experienced by an electron in a multi-electron atom. The term “effective” is used because the shielding effect of negatively charged electrons prevents higher orbital or valency electrons from experiencing the full nuclear charge.

The effective nuclear charge on an electron is given by the following equation:

Z_eff = Z – S

where Z is the number of protons in the nucleus (atomic number), and S is the number of electrons between the nucleus and the electron in question (the number of nonvalence electrons).

As you move from left to right along a period, and more positive charges (protons) fill up the nucleus, the more attraction the valence electron feels. As you move down a group, you jump into the next electron shell, thus shielding the valence electrons from the inner positive charge, and decreasing the effective nuclear charge.

Here, correct option : (D) I

queen_honey_blossom answered 1 year ago

Which has the highest Zeff for its valence electron? A) He B) Si C) K D)...

Which has the highest Zeff for its valence electron? A) He B) Si C) K D) H And why?

a) Which electrons experience a greater Zeff (effective nuclear charge): the valence electrons in Be or...

a) Which electrons experience a greater Zeff (effective nuclear charge): the valence electrons in Be or the valence electrons of N? Why? Using the simple equation on page 260, calculate the Zeff of 3p electron of K atom. a. Using the trends in ionization energy of sodium and electron affinity of oxygen, explain why sodium oxide has the formula Na2O and not NaO. Which specific orbital loses an electron in the fourth ionization step of Carbon? 2) Write the atomic...

Which pair(s) is/are listed in order of increasing bond energy? I: F−F < Cl−Cl < Br−Br...

Which pair(s) is/are listed in order of increasing bond energy? I: F−F < Cl−Cl < Br−Br II: H−N < H−O < H−F III: C−O < C=O < C≡O A) I only B) II only C) I and III D) II and III E) I, II, and III

PART A: Choose the bond below that is least polar A. C-F B. C-Cl C. C-Br...

PART A: Choose the bond below that is least polar A. C-F B. C-Cl C. C-Br D. C-I E. C-O Please explain how the answer is found PART B: Which of the following molecules is polar? A. CO2 B. CCl4 C. H2 D. NO2 E. O3 Please explain your answer PART C: Which of the following polyatomic ions is polar? A. NH4+ B. OH- C. SO4- D. PO43- Please explain your answer

Identify the isoelectronic elements A. Cl-, F-, I-, Br-, At- B. N3-, S2-, Br-, Cs+, Sr2+...

Identify the isoelectronic elements A. Cl-, F-, I-, Br-, At- B. N3-, S2-, Br-, Cs+, Sr2+ C. P3-, S2-, Cl-, K+, Ca2+ D. Zn2+, Co2+, Cu2+, Cr2+, Cd2+ E. Ne, Ar, Kr, Xe, He

1. Which atom has its valence electrons in a single sublevel?

(A) Cl (B) Mg (C) Al (D) P1. Which atom has its valence electrons in a single sublevel?2. Which element forms a stable diatomic molecule?

which has the highest and lowest EN [ Cl, P, Br]

Assume that: float a, b, c, d, f; and variables b, c, d, f are initialized....

Assume that: float a, b, c, d, f; and variables b, c, d, f are initialized. Write a line of c++ code that calculates the formula below and stores the result to the variable a:

Which electrons experience a greater effective nuclear charge, the valence electrons in beryllium, or the valence...

Which electrons experience a greater effective nuclear charge, the valence electrons in beryllium, or the valence electrons in nitrogen? Which electrons experience a greater effective nuclear charge, the valence electrons in beryllium, or the valence electrons in nitrogen? the valence electrons in beryllium the valence electrons in nitrogen More information is needed before the correct answer can be determined.

Which element has a neon core and five valence electrons in its ground state electron configuration?

Question