10. Periodic Properties of the Elements

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

Why does an atom with many valence electrons tend to gain electrons rather than lose any?

Which of the following represents the valence electron configuration for a carbon atom?

How many electrons are present in the outermost energy level (valence shell) of a neutral carbon atom?

In an atom, which group of electrons typically have the same amount of energy?

How does the number of valence electrons in an element influence its chemical properties?

How many valence electrons does an iron (Fe) atom have in its ground state?

How many valence electrons does a carbon atom possess?

Why is the calcium ion (Ca^{2+}) more stable than the calcium atom (Ca)?

How many dots should be shown in the electron dot (Lewis dot) diagram of a boron (B) atom?

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

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

Which element has exactly 6 valence electrons and the lowest atomic mass among such elements?

How many valence electrons does the element helium (He) have?

Which of the following best describes the significance of valence electrons in an atom?