10. Periodic Properties of the Elements

How many valence electrons does a boron (B) atom have?

Which element has 2 energy levels and 5 valence electrons?

Where are valence electrons located in an atom?

How many valence shell electrons does an atom of thallium (Tl) have?

Which statement best describes the outer energy level (valence) electrons of metal atoms?

Which of the following elements has a full valence shell?

Which of the following atoms can expand its valence shell when bonding?

How many valence electrons do the alkaline earth metals possess?

Which characteristic of metal atoms helps explain why valence electrons in a metal are delocalized?

Which of the following is the correct number of valence electrons in NH3, and which Lewis structure best represents the molecule?

How many valence electrons does xenon (Xe) have?

How many unpaired electrons are present in a ground-state vanadium (V) atom?

Which element has 5 valence electrons in the third energy level?

Which of the following represents the valence electron configuration for a calcium (Ca) atom?

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