Question

Why is sodium atom monovalent

Answer 1

Hey,

Sodium is a monovalent element. Physically it is a metal. Belongs to 1st group of periodic table. Symbol- Na. (Derived from Natrium - a Latin word)

This group elements are known as Alkali metals. Because they form strong bases when react with hydroxide (OH) groups.

(Alkali- a substance that forms a salt when mixed with an acid.)

Example: NaOH., KOH.

HOPE IT HELPS:-))

Answer 2

Atomic Structure

Basically, atoms consist of three types of particles. Protons and Neutrons form the Nucleus of the atom. Protons have an effective positive charge of 1. Thus, for example, if there were 3 protons in the atom, the overall charge of the nucleus would be +3. Electrons orbit the nucleus in layers or "Shells" and have an effective negative charge of 1. For every naturally occurring element, the number of electrons in the atom equals the number of protons and the effective charges of each particle are canceled out. The elements can be tabulated in order of increasing number of protons, or Atomic Number. This is known as the Periodic Table. As the number of electrons also progressively increase, different shells of electrons are filled, the ones closest to the nucleus being filled first. These shells can be thought of as the orbits of planets around the sun, being of increasing radius from the center.