Question

periodic table organization; how are elements arranged in the modern periodic table? what happens to the number of valence electrons as you move from left to right across the periodic table? what is a group? list 3 elements that are in the same group: what do members of a group have in common? what is a period? list 3 elements that are in the same period: what do members of a period have in common? consider the following row in the periodic table of elements: li be b c n o f ne which elements are the most likely to conduct electricity?

Explanation:

Elements are arranged by atomic number. Valence electrons increase left - right. A group is a vertical column (e.g., Li, Na, K; same number of valence electrons). A period is a horizontal row (e.g., Li, Be, B; same number of electron shells). Metals like Li are good conductors.

Answer:

How are elements arranged in the modern periodic table?: By atomic number.
What happens to the number of valence electrons as you move from left to right across the periodic table?: Increases.
What is a group?: A vertical column.
List 3 elements that are in the same group: Lithium (Li), Sodium (Na), Potassium (K).
What do members of a group have in common?: Same number of valence electrons.
What is a period?: A horizontal row.
List 3 elements that are in the same period: Lithium (Li), Beryllium (Be), Boron (B).
What do members of a period have in common?: Same number of electron shells.
Which elements are the most likely to conduct electricity?: Li.