Periodic Table

There is no compound called "sulphur quad oxide." It is likely a mistaken or misspelled term. The correct name for the compound with four oxygen atoms bonded to a sulfur atom is sulfur tetraoxide (SO4). However, this compound is highly reactive and unstable, thus rarely encountered in pure form.

Iodine appears in group 7 of the periodic table (halogens) because it has 7 valence electrons. This property makes it chemically similar to other elements in the group, such as fluorine, chlorine, and bromine. Grouping elements with similar chemical properties helps in organizing the periodic table.

There are a handful or elements whose chemical symbols do not match their English names. In most cases they are very familiar and common elements, and have symbols that match Latin names instead:

Sodium -- Na from Natrium, named after a strongly alkaline lake Natron

Potassium -- K from Kalium, same Arabic root word as alkali

Iron -- Fe from Ferrum

Copper -- Cu from Cuprum (or Cyprus)

Silver -- Ag from Argentum

Antimony -- Sb from Stibium

Gold -- Au from Aurum, and

Mercury -- Hg from Hydrargyrum -- liquid silver

There is one element whose symbol comes from its German name:

Tungsten -- W from Wolfram -- Wolf Rahm = wolf's breath. Our name for it comes from the Swedish Tung Sten = heavy stone.

Helium has a full outmost valence shell. It is a nobel gas. it doesn't react with other chemicals. because the atomic number is 2 so it has to be in group 18 as it also has noble gases.

Yes, elements 11-18 on the periodic table belong to the same family, known as the "alkali earth metals" family. These elements share similar chemical properties and are known for their reactivity and tendency to form ions with a positive charge.

The symbol "Cp" in the periodic table does not correspond to any known element. It is possible that it is an incorrect or non-standard notation.

Yes, Robert Reich and Clare Dalton divorced in 2012. They were married for over 35 years before deciding to end their marriage.

To lay a table for silver service, start by placing a clean, pressed tablecloth on the table and ensure the table is set symmetrically. Begin with a charger plate at each setting, followed by the main course plate in the center. Arrange silverware in the order of use, with the main course fork on the left and the main course knife on the right. Finally, place water and wine glasses above the knives.

the atomic radii decreases as you move from left to right on the periodic table, because in the same row, any added electrons are in the same orbital level. because of this, as you add protons to go from left to right, you have more protons per electron per degree of electron shielding (caused by other orbital levels of electrons). as such, the electrons are more strongly attracted to the protons, and thus their orbits around the atom's protons become smaller.

elements in group Ia - IVa have an oxidation number equal to the positive number of the group.example oxidation of K = +1, K is in group 1. elements in group Va - VIIa have an oxidation number equal to the group number minus 8. for example oxidation of O is -2, group number 6a minus 8 equals -2. as for the rest of the elements in groups 1b to 8b i have no idea and am searching for the answer.

Neon gas is extracted from the atmosphere through a process called fractional distillation. Once collected, the gas is purified and stored in cylinders under pressure. When electricity is passed through the gas, it emits a bright orange-red light, making it usable for applications such as in neon signs and lighting.

Yes, the Caucasian Shepherd Dog belongs to the Working Group. This breed is known for its guarding abilities and is used to protect livestock and property.

Half-life refers to nuclear isotopes. Each isotope, whether naturally ocurring or man-made, has a different half-life. You must say which element that is emitting radiationyou are asking about.

Electricity can pass through a material if the material contains particles that are able to carry electric charge, such as electrons in metals. Materials that are good conductors of electricity have free electrons that can move easily in response to an electric field, allowing the flow of electric current. Conversely, materials that are poor conductors, such as insulators, do not have these free-moving charge carriers, so electricity cannot pass through them easily.

Dmitri Mendeleev is credited with developing the periodic table of elements in 1869. He organized the elements based on their atomic mass and properties, predicting the existence of elements yet to be discovered. His periodic table laid the foundation for our modern understanding of the chemical elements.

Element X would most likely be found in the alkali metal group on the far left of the periodic table.

"Metallic" is not a metal. But elements that are metals, are metallic.

A candle is a mixture of different compounds. The wax in a candle is typically made of hydrocarbons, such as paraffin or beeswax. When the candle is burned, the compounds in the wax undergo a chemical reaction to produce heat, light, and products like carbon dioxide and water vapor.

Mendeleev's periodic table was based on the atomic masses of elements. However, this was not effective when isotopes were discovered. An isotope of an element is defined as the element having the same atomic number but varying mass numbers. So, mass numbers weren't constant and hence, a better characteristic was chosen -atomic number. Atomic number of any element was a characteristic of a particular element. Hence atomic numbers were taken as the basis of classification instead of atomic masses.

Helium is not very dense especially because it is a gas, hence when you inhale helium it makes your voice high pitched because the low density the sound waves are travelling through lets the sound waves go faster, it is like fast forwarding a video or a sound the pitch get higher and higher the faster you go.

The universe is composed of various elements such as hydrogen, helium, oxygen, carbon, and nitrogen, among others. These elements are fundamental building blocks that make up everything we observe in the cosmos, from stars and planets to living organisms.

Silicon is the primary element used for the manufacture of computer memory chips. Silicon is a semiconductor material that can be easily manipulated to create integrated circuits and memory storage components like transistors and capacitors.

A group contains elements having similar properties because of the same number of valence electrons present in the atoms of those elements. So, of example if you take group one containing Lithium, Sodium, Potassium, etc, they all have similar properties because of having the same valency (+1) .

The trend in first ionization energy across a period of elements generally increases from left to right, due to increasing effective nuclear charge (more protons) and decreasing atomic size leading to stronger attraction for the valence electrons. This makes it harder to remove the outermost electron, requiring more energy.

The topics in an index are typically arranged alphabetically, making it easier for readers to locate specific terms or concepts within a document. Subtopics are usually listed alphabetically as well, providing a clear and organized reference point for readers.