Complete the mcq:
Q1: Compare the elements B, Al, C, and Si:
(a) Which has the most metallic character?
(b) Which has the largest atomic radius?
(c) Which has the greatest electron affinity?
(d) Place the three elements B, Al, and C in order of increasing first ionization energy.
Q2: Name the element corresponding to each characteristic below:
(a) the element with the electron configuration 1s^2 2s^2 2p^6 3s^2 3p^3
(b) the Group 2 element with the smallest atomic radius
(c) the element with the largest ionization energy in Group 15
(d) the element whose 2_ ion has the configuration [Kr]4d^5
(e) the element with the greatest electron affinity in Group 17
(f) the element whose electron configuration is [Ar]3d^10 4s^2
An electron moves with a velocity of 2.5 x 10^8 cm s^-1. What is its wavelength?
Q3: Give the names of the orbitals derived by solution of the Schrodinger equation when the following values of quantum numbers have been used:
(a) n = 4, l = 2, m_l = -2
(b) n = 4, l = 2, m_l = 0
(c) n = 3, l = 0, m_l = 0
(d) n = 2, l = 1, m_l = -1
(e) n = 5, l = 3, m_l = 2
Depict with an orbital box diagram the electron configuration of ground-state gallium atoms. Give a set of quantum numbers for the highest-energy electrons.