Boron is a chemical element. It has the symbol B and atomic number 5. In its crystalline form it is a brittle, dark, lustrous metalloid; in its amorphous form it is a brown powder.

Boron exists naturally as 19.78% 10 B isotope and 80.22% 11 B isotope. High-purity crystalline boron may be prepared by the vapor phase reduction of boron trichloride or tribromide with hydrogen on electrically heated filaments.

2025年3月20日 · boron (B), chemical element, semimetal of main Group 13 (IIIa, or boron group) of the periodic table, essential to plant growth and of wide industrial application. Pure crystalline boron is a black, lustrous semiconductor; i.e., it conducts electricity like a metal at high temperatures and is almost an insulator at low temperatures.

Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page Basic Information Name: Boron Symbol: B Atomic Number: 5 Atomic Mass: 10.811 amu Melting Point: 2300.0 °C (2573.15 K, 4172.0 °F) Boiling Point: 2550.0 °C (2823.15 K, 4622.0 °F) Number of Protons/Electrons: 5 Number of Neutrons: 6 Classification: Metalloid

Atoms are the basic particles of the chemical elements. An atom consists of a nucleus of protons and generally neutrons, surrounded by an electromagnetically bound swarm of electrons. The chemical elements are distinguished from each other …

Boron is the 5th element in the periodic table and has a symbol of B and atomic number of 5. It has an atomic weight of 10.810 and a mass number of 11. Boron has five protons and six neutrons in its nucleus, and five electrons in two shells. It is located in group thirteen, period two and block p of the periodic table.

2023年11月19日 · Atoms consist of protons, neutrons, and electrons. A proton carries a positive electrical charge, a neutron is neutral, and an electron has a negative charge. In a neutral atom, there are equal numbers of protons and electrons. These particle organize in a characteristic way:

2024年2月29日 · Atoms are tiny particles that form the basic building blocks of all matter in the universe, whether solid, liquid, or gas. All living organisms and nonliving objects found on Earth are made of trillions and trillions of atoms. The smaller particles that make up an atom are known as subatomic particles.

Molecules are made when two or more atoms chemically bond together. Atoms from different elements can combine. When the atoms are from different elements, the molecule can also be …

The configuration notation provides an easy way for scientists to write and communicate how electrons are arranged around the nucleus of an atom. This makes it easier to understand and predict how atoms will interact to form chemical bonds.