2) _______________ electrons are electrons in the outermost energy shell.

3) Energy plays an important role in determining how electrons are arranged, or configured, in an atom. Electrons occupy the _________ energy subshells first.

4) The way in which electrons are arranged in various orbitals around the nuclei of atoms is called _____________

5) The _______________________between the negatively charged electrons help explain why each type of orbital has a different shape and relative energy.

6) Each orbital can hold ________ electrons.

7) The s subshell has _____ orbital, the p subshell has ______orbitals.

8) The individual atomic orbitals in an atom overlap in _________ dimensional space.

9) All s orbitals has _________ shape.

10) The maximum number of electrons in an energy level can be found by the following formula _____

Answer by true or false, correct the false statement : 1) The number of the principal energy shell, n, increases as its distance from the nucleus decrease.

Answer by true or false, correct the false statement : 2) Spin is a property of electrons that may be thought of as clockwise or counter clockwise orientation.

Answer by true or false, correct the false statement : 3) Valence electrons are electrons in all the inner, or lower energy, shells.

Answer by true or false, correct the false statement : 4) The noble electronic configuration of Magnesium Mg is [ Ne]3s2. So Mg is in row two and column three of the periodic table.

Answer by true or false, correct the false statement : 5) Electron dot structure are simple diagrams that show the number of valence electrons, represented as dots around the element symbol.

Solve the following questions : 1. Write the electronic configuration of the following elements • Silicon Si • Chromium Cr.

Solve the following questions : 2. Write the noble configuration of sulfur then detect its location in the periodic table.

Solve the following questions : 3. Draw the electron dot structure of Argon Ar and phosphorus P, then complete • Ar has _______valence electrons • P has ________free electrons and _____ lone pairs.