1) What is the maximum number of electrons the innermost electron shell (the first electron shell) can hold? a) 1 b) 2 c) 4 d) 8 2) What is the maximum number of electrons the second and third electron shells can hold? a) 2 b) 4 c) 8 d) 10 3) Refer to the Periodic Table. Which element has atoms with the electronic configuration 2, 6? a) lithium b) carbon c) oxygen d) fluorine 4) Refer to the Periodic Table. Which element has atoms with the electronic configuration 2, 8, 5? a) nitrogen b) phosphorus c) chlorine d) sulfur 5) Fill in the blank: elements in the same period have the same number of ______________________. a) electron shells b) electrons c) valence electrons d) protons 6) Fill in the blank: elements in the same group have the same number of ______________________. a) electron shells b) electrons c) valence electrons d) neutrons 7) What is meant by a stable electronic configuration (atom does not react)? a) Fully filled electron shells b) Empty electron shells c) Fully filled valence electron shell d) Partly filled valence electron shell 8) An atom has the electronic configuration 2, 8, 3. This element is found in ___________________? a) Group 2 b) Group 3 c) Period 2 d) Period 3 9) An atom has 15 protons and 14 neutrons. What is its condensed electronic configuration? a) 8, 7 b) 2, 8, 4 c) 2, 8, 5 d) 2, 4, 8, 2 10) The nuclide notation of a sodium atom is 2311Na. What is the condensed electron configuration of the sodium atom? a) 2, 8, 1 b) 2, 8, 2 c) 2, 8, 8, 5

[C] Electronic configuration

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