things_to_know_for_unit_2_test

(9.3)Match each of the following descriptions with the correct term. Only two electrons with opposing spins are allowed in an orbital. [Choose ] [Choose ] Hund's rule When filling orbitals on the same energy level Pauli's exclusion principle (=degenerate orbitals), electrons fill them singly first (each Aufbau Principle with parallel spin). No two electrons can have the same quantum numbers. [Choose ]

(4.11) Give the values for all four quantum numbers for each electron in the ground state of the nitrogen atom, 7N, writing the positive values for mị and mg first. Present your answer in the exact order as follows: (n1 m mş) for 7N: 1s2 2s² 2p³ subshell (n l m¡ mg) 1s2 2s2 2p3

(9.8) What are the principal quantum number (n) and angular quantum number (I), for an electron in a 3p orbital? On = 3,1 = 1 On=3,1 = 2 On = 3,1 = 3 On = 3,1 = 0

I know I have to somehow convert 275kJ/mol into Joules but I’m not sure how. Could you explain how to solve it?

Name the element that corresponds to each of the following:(5.4, 5.5, 5.6)a. 1s22s22p63s23p64s13d5b. [Xe]6s24f 145d106p5c. halogen with the highest ionization energy                                                  d. Group 2A (2) element with the lowest ionization energye. Period 4 element with the smallest atomic size

Consider three elements with the following abbreviatedelectron configurations: (5.4, 5.5, 5.6)X = [Ar]4s23d5 Y = [Ar]4s23d104p1 Z = [Ar]4s23d104p6a. Identify each element as a metal, nonmetal, or metalloid.b. Which element has the smallest atomic size?c. Which element has the highest ionization energy?d. Which element has a half-filled sublevel?

(9.6) Which of the following is in the correct order of increasing atomic radius? O Cs > S > Si Cs > Si > S OS > Si > Cs O Si > S > Cs

28. Completely describe the orbitals found in the fourth energy level. How many electrons can be found in a full fourth energy level? Give an example of an element that has its valence electrons in the fourth energy level. (3.3) K/U

(8.2)Which of the following occurs as the wavelength of a photon increases? O None of the above occurs as the wavelength of a photon increases. The frequency decreases. The speed decreases. O The energy increases.

Q 2 please

5.96 a. Si b. Se c. Mn d. Sb Write the abbreviated electron configuration and group number for each of the following elements: (5.4) a. Br b. Rh c. Tc d. Ra

The most prevalent isotope of gold is Au-197. (4.5)a. How many protons, neutrons, and electrons are in this isotope?b. What is the atomic symbol of another isotope of gold with 116 neutrons?c. What is the atomic symbol of an atom with an atomic number of 78 and 116 neutrons?

(9.3, 9.4)Identify the element with the ground state electron configuration of [Ar]4s23d¹04p³. O antimony iron tin arsenic

29. Calculate the maximum number of electrons in the energy levels with the following principal quantum numbers, n: (3.4) K (a) 1 (c) 3 (b) 2 (d) 4

11:11 ÔN A D Instructions - Classes - C... https://coetbschemfabon.neolm. Fill in the blanks: (4.1) Write the complete atomic/nuclide symbol for (a) an ion fluoride that contains 9 protons and 10 neutrons in the nucleus and 10 extranuclear electrons? (b) an ion of iron that contains 26 protons and 30 neutrons in the nucleus and 24 extranuclear electrons? Note: Use the "^" caret symbol to denote exponential components..for Ca¯“can be written as example, 20 "20^40Ca^-2" (atomic number written first). Answer: (a) mass number nuclide symbol (b) mass number nuclide symbol Continue > Status Dause

4.121 Complete the following table: (4.3) Namere is ONE O tong of the Element bots he Magnesium Joghe amouse. The Atomic Symbolbo 80 Se 228 F 88 Ra Number of Protons 28 Number of Neutrons 34 14 Number of Electrons Ave