How many valence electrons are in groups 1 2 3 4 5 6 7 and group 6 elements?

In chemistry, the group number of an element indicates the number of valence electrons it has. Group 1 elements, such as hydrogen and lithium, possess 1 valence electron each. This makes them highly reactive and eager to form bonds.

Moving on to group 2 elements like beryllium and magnesium, they contain 2 valence electrons. These elements are less reactive compared to those in group 1 but still exhibit certain chemical properties due to their outer electron configuration. Group 3 elements, including boron and aluminum, have 3 valence electrons, leading to distinct chemical behaviors and reactivity patterns. Similarly, group 4 elements like carbon and silicon possess 4 valence electrons, providing a stable foundation for various bonding possibilities. Group 5 elements, such as nitrogen and phosphorus, feature 5 valence electrons, influencing their participation in chemical reactions and bond formation. Lastly, group 6 elements, including oxygen and sulfur, have 6 valence electrons, contributing to their tendency to gain or share electrons to achieve a stable electron configuration.

Group 1: Alkali Metals

Group 1 elements, also known as alkali metals, include lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). They have onevalence electron.

Group 2: Alkaline Earth Metals

Group 2 elements, known as alkaline earth metals, consist of beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They have twovalence electrons.

Group 3

Group 3 elements include boron (B), aluminum (Al), gallium (Ga), indium (In), and thallium (Tl). They have threevalence electrons.

Group 4

Group 4 elements consist of carbon (C), silicon (Si), germanium (Ge), tin (Sn), and lead (Pb). They have fourvalence electrons.

Group 5

Group 5 elements include nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). They have fivevalence electrons.

Group 6

Group 6 elements consist of oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and polonium (Po). They have sixvalence electrons.

Group 7

Group 7 elements, also known as halogens, include fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). They have sevenvalence electrons.

Group 6 Elements

Group 6 elements, which are a subset of Group 6, include chromium (Cr), molybdenum (Mo), tungsten (W), and seaborgium (Sg). They also have sixvalence electrons.


In summary, the number of valence electrons in various groups are as follows:

  • Group 1: Alkali metals – 1 valence electron
  • Group 2: Alkaline earth metals – 2 valence electrons
  • Group 3 – 3 valence electrons
  • Group 4 – 4 valence electrons
  • Group 5 – 5 valence electrons
  • Group 6 – 6 valence electrons
  • Group 7: Halogens – 7 valence electrons
  • Group 6 Elements – 6 valence electrons

Understanding the number of valence electrons in different groups helps in predicting the reactivity and chemical properties of elements.

Elements in Group 1 have 1 valence electron, elements in Group 2 have 2 valence electrons, elements in Group 3 have 3 valence electrons, elements in Group 4 have 4 valence electrons, elements in Group 5 have 5 valence electrons, elements in Group 6 have 6 valence electrons, and elements in Group 7 have 7 valence electrons. Understanding the number of valence electrons in each group is important in predicting the chemical behavior and properties of elements.

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