Arrange the atoms in the following groups in order of increasing size (atomic radius): 1. As, N, F 2. C, Sn, Si 3. Ca, Se, Br

In each of the following sets of elements, indicate which element has the smallest atomic size. msp;a.Na,K,Rbc.N,P,Asb.Na,Si,Sd.N,O,F

Are the following statements true for the hydrogen atom only, true for all atoms, or not true for any atoms? a. The principal quantum number completely determines the energy of a given electron. b. The angular momentum quantum number, l, determines the shapes of the atomic orbitals. c. The magnetic quantum number, ml, determines the direction that the atomic orbitals point in space.

Based on the Aufbau principle and the n + rule, which of following statements is correct? (a) the 4s orbital fills before the 4p orbitals (b) the 5d orbitals fill before the 6s orbital (c) the 3d orbitals fill before the 3p orbitals (d) the 4f orbitals fill before the 5p orbitals

6.69 Compare the elements Na, B, Al, and C with regard to the following properties. (a) Which has the largest atomic radius? (b) Which has the most negative electron affinity? (c) Place the elements in order of increasing ionization energy.

Based on their positions in the periodic table, rank the following atoms in order of increasing first ionization energy: Mg, O, S, Si

Element 106 has been named seaborgium, Sg, in honor of Glenn Seaborg, discoverer of the first transuraniurn element. a. Write the expected electron configuration for element 106. b. What other element would be most like element 106 in its properties?

6.100 Some spacecraft use ion propulsion engines. These engines create thrust by ionizing atoms and then accelerating and expelling them. According to Newton's laws, this leads to thrust in the opposite direction. Minimizing mass is always important for space applications. Discuss what periodic trends you would need to consider for choosing a material to ionize for engineering designs with this application.

What main group in the periodic table has elements with the largest electron affinities for each period? What group of elements has only unstable negative ions?

On which quantum numbers does the energy of an electron depend in each of the following? a. a one-electron atom or ion b. an atom or ion with more than one electron