Groups 1, 2 and 3 in the Periodic table are examples of metals.
Further Explanation
- Periodic tables is a table that arranges elements in rows known as periods and columns known as groups in order of chemical and physical properties.
- Elements in a similar group have similar chemical properties. For example elements in group 7 are known as halogens, they have a valence of 1 and share chemical properties.
- The most common classification of elements in the periodic table are metals, metalloids and non-metals.
Metals
- Metals are those element in the periodic table that require to gain electrons to attain a stable configuration. These includes:
- Group 1: Elements in group 1 are known as alkali metals. These elements are metals are require to lose one electron to attain a stable configuration and therefore have a valence of 1. They include, Lithium, Sodium and Potassium among others.
- Group 2: Elements in group 2 are known as alkaline earth metals. These elements have a valence of two as they require to lose two electrons to attain a stable configuration. Examples of group 2 element include; Calcium, magnesium, etc.
- Group 3: Elements in group three have a valence of three and require to lose three electrons to attain a stable configuration. Examples, Boron, Aluminum, etc.
Metalloids
- These are elements that have both metallic and non-metallic properties. They include silicon, arsenic, germanium, etc.
Non-metals
- No-metals are elements that form stable ions by gaining electrons forming negatively charged ions. They include elements in group 5, 6, 7 and 8.
Keywords: Metals, periodic table, elements
Learn more about:
- Properties of metallic elements: https://brainly.com/question/1560669
- Properties of non-metals: https://brainly.com/question/6947207
- Properties of metalloids: https://brainly.com/question/6499600
Level: High school
Subject: Chemistry
Topic: Chemical families and periodic table
