First 20 elements

An element is a substance that cannot be broken down chemically into simple molecules. An element is made up of atoms with the same atomic number, which means that each atom in the component has the same number of protons in its nucleus as the other atoms.

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Element identification can be done using the atomic number, element name, or element symbol. The symbol is a one- or two-letter abbreviation of the name. On the other hand, certain symbols allude to old element names. The symbol for sodium, which is abbreviated as Na. This is a play on the Latin word natrium, which was previously used to describe caustic soda. The latin name for sodium’s atomic number is natrium. The symbol for potassium is K, which comes from the Latin word kalium, which meant alkali or potash. The first letter of an element symbol is capitalised. When there’s a second letter, it’s lower case.

Name of first 20 elements:

These are the first 20 elements, listed in order:

  1. H – Hydrogen.
  2. He – Helium.
  3. Li – Lithium.
  4. Be – Beryllium.
  5. B – Boron.
  6. C – Carbon.
  7. N – Nitrogen.
  8. O – Oxygen.
  9. F – Fluorine.
  10. Ne – Neon.
  11. Na – Sodium.
  12. Mg – Magnesium.
  13. Al – Aluminium.
  14. Si – Silicon.
  15. P – Phosphorus.
  16. S – Sulphur.
  17. Cl – Chlorine.
  18. Ar – Argon.
  19. K – Potassium.
  20. Ca – Calcium.

Symbols and Numbers for the Elements:

The atomic number of an element is the number of protons contained in each atom of that element. A one- or two-letter abbreviation of the element’s name is used as the element symbol. It can also refer to an old name. (K, for example, stands for kalium.)

What do the first 20 elements have in common?

The name of an element can reveal information about its properties.

  1. Nonmetals with names that end in ‘-gen’ are gases in their pure state at ambient temperature.

  2. The group of elements known as halogens includes elements with names ending in ‘-ine’. Halogens are very reactive and easily combine to produce compounds.

  3. Noble gases, with names ending in  ‘-on’ are inert or nonreactive gases at ambient temperature.

  4. The majority of element names end with ‘-ium’.Metals, which are usually hard, bright, and conductive, are among these elements.

The number of neutrons or electrons in an atom cannot be determined from an element’s name or symbol. To determine the amount of neutrons, you must first determine the element’s isotope. The total number of protons and neutrons is shown using numerals (superscripts, subscripts, or following the symbol).

Carbon-14, for example, contains 14 protons and neutrons. Because all carbon atoms contain six protons, the number of neutrons is 14 – 6 = 8. Atoms with variable numbers of protons and electrons are referred to as ions. Ions are identified by a superscript following the element symbol that specifies whether the charge on the atom is positive (more protons) or negative (more electrons) as well as the amount of charge. Ca2+, for example, is the symbol for a calcium ion with a positive charge of two. Because calcium has an atomic number of 20 and a positive charge, the ion contains (20 – 2 )or 18 electrons.

Elements of Chemistry:

Protons, which define the type of element, are required for a substance to be considered an element. Elements are made up of atoms, which have a nucleus of protons and neutrons surrounded by an electron cloud or shell. Because they are the simplest type of stuff that cannot be separated chemically, elements are considered the basic building blocks of matter.

First 20 elements properties:

There are quite a few variations in the properties of the first 20 elements.

Under normal circumstances, hydrogen is a nonmetallic, colourless gas. Under extreme pressure, it transforms into an alkali metal. Helium is a colourless, light gas that condenses into a colourless liquid. Lithium is a silver metal with a high reactivity. Beryllium is a grey-white metal with a gleaming finish. Boron is a metallic-looking grey solid. Carbon exists in a variety of forms. Although diamonds can be colourless, they are usually grey or black solids. Under normal circumstances, nitrogen is a colourless gas. As it cools, it turns into a colourless liquid and solid. Oxygen is a clear gas with no colour. It has a blue liquid. Solid oxygen comes in a variety of colours, such as red, black, and metallic. Fluorine is a bright yellow solid and a pale yellow gas. It’s possible for the solid to be opaque or translucent.When excited in an electric field, neon is a colourless gas that creates a distinctive orange-red glow. Sodium is a silvery-white, soft metal. Magnesium is a grey metal with a gleaming finish. Aluminium is a nonmagnetic, soft, silver-colored metal. Silicon is a crystalline solid with a metallic shine that is hard and blue-grey in colour. Under normal circumstances, phosphorus is a solid, however it comes in a variety of forms. White phosphorus and red phosphorus are the most frequent. Sulphur is a solid that is yellow in colour. Under normal circumstances, chlorine is a pale yellow-green gas. It has a brilliant yellow liquid form. Argon is a colourless gas that can also be liquid or solid. When stimulated in an electric field, it emits a beautiful lilac-purple glow. Potassium is a silvery, reactive metal. Calcium is a drab silver metal with a tinge of yellow.


These first 20 elements of the periodic table are found in all eight groups of the table, starting with group one and ending with group eight, sometimes known as inert gases or rare gases. Understanding the chemical behaviour, characteristics, and reactions of the first twenty elements of the periodic table is the first step toward having a comprehensive understanding of chemistry and its applications in all of its branches for a deeper and valuable outcome.


Why is potassium denoted by the letter 'K,' but sodium is represented by the letter 'Na'?

Answer: Potassium’s symbol is ‘K,’ which is taken from the mediaeval Latin name for the element, w...Read full

What is the atomic number of sodium and potassium, respectively?

Answer: The atomic number of sodium is 11 whereas the atomic number of potassium is 19.

What characteristics do the elements in the periodic table have?

Answer: Because of their atomic number, atomic mass, electronic configuration, electronegativity, and electron gain ...Read full

What are the periodic trends in element properties?

Answer: The current periodic table shows periodic trends in the characteristics of the elements along the groups and...Read full