Why are nonmetals grouped together?

Answer 1

The Periodic Table arranges all of the known elements in order of increasing atomic number. Order generally coincides with increasing Atomic Mass. The different rows of elements are called periods. The period number of an element signifies the highest energy level an electron in that element occupies (in the unexcited state). The number of electrons in a period increases as one moves down the Periodic Table; therefore, as the energy level of the atom increases, the number of energy sub-levels per energy level increases.

Elements that lie in the same column on the periodic table (called a "group") have identical valance electron configurations and consequently behave in a similar fashion chemically. For instance, all the group 18 elements are inert, or noble gases.

Element groups are either nonmetals or various subsets of metals, but there is no distinct line between the two types of elements. Metal elements are usually good conductors of both electricity and heat. Subsets are based on similar characteristics and chemical properties. Our version of the periodic table uses the most commonly accepted demarcations between the elements.

Answer 2

The periodic table arranges all of the known elements in order of increasing atomic number. Order generally coincides with increasing Atomic Mass. The different rows of elements are called periods. The period number of an element signifies the highest energy level an electron in that element occupies (in the unexcited state). The number of electrons in a period increases as one moves down the periodic table; therefore, as the energy level of the atom increases, the number of energy sub-levels per energy level increases.

Elements that lie in the same column on the periodic table (called a "group") have identical valance electron configurations and consequently behave in a similar fashion chemically. For instance, all the group 18 elements are inert, or noble gases.

Element groups are either nonmetals or various subsets of metals, but there is no distinct line between the two types of elements. Metal elements are usually good conductors of both electricity and heat. Subsets are based on similar characteristics and chemical properties. Our version of the periodic table uses the most commonly accepted demarcations between the elements.

Answer 3

Nonmetals are grouped together because they share similar physical and chemical properties. They tend to have high ionization energies and electronegativities, and they are usually poor conductors of heat and electricity. Grouping them together helps to understand and predict their behavior in chemical reactions.

Answer 4

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