In the Periodic Table, the elements are arranged in columns called Groups and in rows called Periods. (a)Complete the table for some of the elements in Period 3.(ii) What is the relationship between the group number and the number of valency electrons?
Question
In the Periodic Table, the elements are arranged in columns called Groups and in rows called Periods. (a)Complete the table for some of the elements in Period 3.(ii) What is the relationship between the group number and the number of valency electrons?
Solution
(a) Period 3 of the Periodic Table includes the following elements:
- Sodium (Na) - Group 1
- Magnesium (Mg) - Group 2
- Aluminum (Al) - Group 13
- Silicon (Si) - Group 14
- Phosphorus (P) - Group 15
- Sulfur (S) - Group 16
- Chlorine (Cl) - Group 17
- Argon (Ar) - Group 18
(ii) The group number of an element (for Groups 1-18) in the Periodic Table often corresponds to the number of valence electrons of that element. Valence electrons are the electrons in the outermost shell of an atom and determine the atom's ability to form bonds with other atoms. For example, elements in Group 1 have 1 valence electron, elements in Group 2 have 2 valence electrons, and so on. However, this pattern changes when you reach the transition metals (Groups 3-12).
Similar Questions
) What is the relationship between the group number and the number of valency electrons?
All the elements in a group in the long form of periodic table have the same Number of shellsNumber of valence electronsChemical propertiesAll of these
How are the elements within a row different?A.They have different arrangements of core electrons.B.They have different numbers of core electrons.C.They have different numbers of valence electrons.D.They have different period numbers.
Which elements occupy the same group in the periodic table?A.Elements that share the same columnB.Elements that share the same rowC.Elements that share the same inside electronsD.Elements that share the same period
Group numbers on the periodic table help us determine ______.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.