describe the trends in electron configuration in the periodic table by selecting the terms from the drop…

describe the trends in electron configuration in the periodic table by selecting the terms from the drop - down menus.\nthe number of valence electrons from the left to right across a period.\nthe number of valence electrons from the top to the bottom of a group.\nelectrons are added into the outermost in groups 1 and 2.\nelectrons are added in the outermost in groups 3 through 12.\nelectrons are added in the outermost in groups 13 through 18.\ndone

describe the trends in electron configuration in the periodic table by selecting the terms from the drop - down menus.\nthe number of valence electrons from the left to right across a period.\nthe number of valence electrons from the top to the bottom of a group.\nelectrons are added into the outermost in groups 1 and 2.\nelectrons are added in the outermost in groups 3 through 12.\nelectrons are added in the outermost in groups 13 through 18.\ndone

Answer

Brief Explanations:

  1. Across a period (left - right), the number of valence electrons increases as we move from one element to the next because we are adding electrons to the same outer - shell.
  2. Down a group (top - bottom), the number of valence electrons remains the same as elements in the same group have similar chemical properties due to the same number of outer - shell electrons.
  3. In Groups 1 and 2 (the alkali and alkaline earth metals), electrons are added to the outermost s - orbital.
  4. In Groups 3 through 12 (the transition metals), electrons are added to the outermost d - orbitals.
  5. In Groups 13 through 18, electrons are added to the outermost p - orbitals.

Answer:

  1. Increases
  2. Remains the same
  3. s - orbital
  4. d - orbital
  5. p - orbital