10. Periodic Properties of the Elements

Halogens are elements found in Group 17 of the periodic table. How many valence electrons does a halogen atom typically possess?

How many valence electrons are present in a neutral atom of aluminum (Al)?

Which of the following elements has exactly one unpaired electron in its p orbital?

How many valence electrons does a sulfur (S) atom have?

Which pair of elements have the same valence electronic configuration of np^5?

Which of the following represents the valence electron configuration for a fluorine (F) atom?

How many valence electrons does krypton (Kr) have?

How many valence electrons does germanium (Ge) have?

How many valence electrons does a phosphorus (P) atom have?

How many valence electrons does an atom of aluminum (Al) have?

How many valence electrons does an atom of aluminum (Al) possess?

After two nitrogen atoms share their electrons to form a nitrogen molecule (N_2), how many valence electrons does each nitrogen atom have?

Which of the following best describes valence electrons and explains their importance to chemists?

How many valence electrons does an atom of aluminum (Al) have?

To fill the valence shell, an electrically neutral, unbonded atom with atomic number 8 must add how many electrons?