11 grade chemistry others
In how many groups and periods the elements in modern periodic tables are classified?
In how many groups and periods the elements in modern periodic tables are classified?
1 Answer
Askiitians Tutor Team
Approved Tutor Answer10 Months agoThe modern periodic table classifies elements into 18 groups and 7 periods.
Understanding Groups
Groups are the vertical columns in the periodic table. Elements in the same group share similar chemical properties. For example:
- Group 1: Alkali metals
- Group 17: Halogens
Exploring Periods
Periods are the horizontal rows. Each period indicates the number of electron shells an element has. For instance:
- Period 1: Contains hydrogen and helium
- Period 2: Includes lithium to neon
Summary
In total, the periodic table is organized into 18 groups and 7 periods, helping to categorize elements based on their properties and electron configurations.
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