Question
What do elements in the same period have in common?
Answers
Answered by
GPT 3.5
Elements in the same period (horizontal row) in the periodic table have the following characteristics in common:
1. Same number of energy levels: Elements in the same period have the same number of occupied energy levels or electron shells. For example, all elements in the second period have two occupied energy levels.
2. Gradual increase in atomic number: Going from left to right within a period, there is a steady increase in the atomic number of the elements. This indicates an increase in the number of protons and electrons in the nucleus and the electron distribution.
3. Gradual decrease in atomic size: As the atomic number increases within a period, the atomic size generally decreases. This occurs because the increasing positive charge in the nucleus attracts the electrons more strongly, leading to a tighter electron cloud and smaller atomic size.
4. Similar valence electron configuration: Elements within the same period often have the same number of valence electrons (electrons in the outermost energy level or shell). These valence electrons determine the chemical properties of the elements and their reactivity.
5. Similar chemical properties: Elements in the same period often exhibit similar chemical properties due to their similar valence electron configurations. This similarity in chemical behavior can be observed in the periodic trends within a period, such as the reactivity or tendency to gain or lose electrons.
1. Same number of energy levels: Elements in the same period have the same number of occupied energy levels or electron shells. For example, all elements in the second period have two occupied energy levels.
2. Gradual increase in atomic number: Going from left to right within a period, there is a steady increase in the atomic number of the elements. This indicates an increase in the number of protons and electrons in the nucleus and the electron distribution.
3. Gradual decrease in atomic size: As the atomic number increases within a period, the atomic size generally decreases. This occurs because the increasing positive charge in the nucleus attracts the electrons more strongly, leading to a tighter electron cloud and smaller atomic size.
4. Similar valence electron configuration: Elements within the same period often have the same number of valence electrons (electrons in the outermost energy level or shell). These valence electrons determine the chemical properties of the elements and their reactivity.
5. Similar chemical properties: Elements in the same period often exhibit similar chemical properties due to their similar valence electron configurations. This similarity in chemical behavior can be observed in the periodic trends within a period, such as the reactivity or tendency to gain or lose electrons.
There are no human answers yet. A form for humans to post answers is coming very soon!