On 17 February 1869, Russian chemist Dmitri Mendeleev jotted down the symbols for the chemical elements, putting them in order according to their atomic weights and inventing the periodic table. He ...

Basic sciences - chemistry, physics, mathematics, and biology – allow us to understand natural phenomena and drive innovation. Investing in these disciplines is essential to create the tools we need ...

Cations are ions that are positively charged. Anions are ions that are negatively charged. Ions are charged atoms or molecules. If a balanced atom loses one or more electrons, it will become a ...

The International Union of Pure and Applied Chemistry has approved the name and symbols for four elements: nihonium (Nh), moscovium (Mc), tennessine (Ts), and oganesson (Og), respectively for element ...

The covalent radius (a measure of how large individual atoms are) shows different trends if you are moving across a period or down a group. A comparison of the relative covalent radii of atoms is ...

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the ...

Your iPhone can connect to most printers, just like a computer, and with a few taps, it can print out the documents you need. I started my career with CNET all the way back in 2005, when the (original ...

The Periodic Table Silver Card by North View Products (NVP) is a remarkable piece of silver bullion that merges scientific fascination with investment value. Weighing 1 troy ounce and crafted from ...

Across Italy, ceremonial brotherhoods are sworn to protect historic dishes – from salted cod stew to cured meats – using medieval rituals, velvet robes and fierce culinary devotion. Massimo Bottura is ...

They must be stored under oil to prevent them reacting with the air or water vapour. All Group 1 elements react with water to produce a metal hydroxide and hydrogen. This is the equation for the ...

Abstract: Pseudo-periodic signals are frequently encountered in modern scientific and engineering applications. Most current signal modeling methods focus on strictly periodic signals, and they may ...

Abstract: This review article aims to give a comprehensive review of periodic orbits in the circular restricted three-body problem (CRTBP), which is a standard ideal model for the Earth-Moon system ...