What are characteristics of a periodic table?
The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number, oganesson. The atomic number of an element is the number of protons in the nucleus of an atom of that element.
What are five characteristics of a group on the periodic table?
On moving down the group, atomic size increases….1. Atomic size:
- Atomic size: The atomic size decreases from left to right in a period.
- Valence Electrons: The number of V.Es increases from 1 to 8 along the period.
- Electropositivity & reactivity of Metals:
- Electronegativity & reactivity of non-metals:
What are the classification of periodic table?
Elements in the same group of the periodic table have similar chemical properties. Elements can be classified as metals, metalloids, and nonmetals, or as a main-group elements, transition metals, and inner transition metals. Groups are numbered 1–18 from left to right.
What is the characteristic of the family in Group 1?
Alkali Metals or Group 1 Family of Elements These elements are metals. Sodium and potassium are examples of elements in this family. Hydrogen is not considered an alkali metal because the gas does not exhibit the typical properties of the group.
What are the 9 different families on the periodic table?
9 Element Families
- Alkali Metals: Group 1 (IA) – 1 valence electron.
- Alkaline Earth Metals: Group 2 (IIA) – 2 valence electrons.
- Transition Metals: Groups 3-12 – d and f block metals have 2 valence electrons.
- Boron Group or Earth Metals: Group 13 (IIIA) – 3 valence electrons.
What are the 10 families of the periodic table?
Terms in this set (10)
- alkali family. group 1, hydrogen is not a member.
- alkaline earth. group 2, also very reactive, only 2 valence electrons.
- transition metals.
- boron family.
- carbon family.
- nitrogen family.
- oxygen family.
- halogen family.
What are the groups and characteristics in the periodic table?
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties.
What are the characteristics of period and group in periodic table?
The horizontal rows on the periodic table are called periods. So, in these groups, the reactivity decreases as we go from top to bottom. Valence electrons, valency, atomic size, ionization energy, metallic character, electron-positivity, electron-negativity and reactivity are the characteristics of groups.
What are the periodic table family names?
5 Element Families
- Alkali metals.
- Alkaline earth metals.
- Transition metals.
- Noble gases.
How many element families are there on the periodic table?
9 Element Families Another common method of categorization recognizes nine element families: Alkali Metals: Group 1 (IA) – 1 valence electron Alkaline Earth Metals: Group 2 (IIA) – 2 valence electrons Transition Metals: Groups 3-12 – d and f block metals have 2 valence electrons
What are the properties of the periodic table?
He stated that the properties of elements are periodic functions of their atomic number. A tabular arrangement of elements in groups and periods which highlights the regular trends in properties of elements is defined as the periodic table.
How are the characteristics of an element family determined?
The characteristics of the elements in these families are determined primarily by the number of electrons in the outer energy shell. Element groups, on the other hand, are collections of elements categorized according to similar properties.
What are the long groups on the periodic table?
Period four and five have eighteen elements and are known as the long group. In the modern periodic table, group number 3 of period six contains the lanthanide series which are the rare earth elements. We have radioactive elements (actinides) present in group 3 of period seven.