Periodic Table

Chlorine atom has 17 protons and 17 electrons.

The number of neutrons depends on the isotope considered.

Chlorine has four isotopes: Cl-35, Cl-36, Cl-37 and Cl-38 with 18, 19, 20 and 21 neutrons respectively.

However out of these, Cl-35 and Cl-37 are the most stable isotopes.

All elements of the alkali metals (lithium [Li], sodium [Na], potassium [K}, rubidium [Rb], cesium [Cs] and francium [Fr]) group will react violently when placed in water. The further from the top, the more violent the reaction will be. This happens due to their very high reactivities and thus, they are kept in kerosene oil.

Na, the symbol for sodium. Natrium is the Latin name of sodium.

Element 101, mendelevium, is named in honor of Dmitri Mendeleev, the Russian chemist who formulated the periodic table. Mendelevium is a synthetic element that was first synthesized in 1955.

Johann Wolfgang Döbereiner attempted to classify elements by organizing them into a seven-column table, known as Döbereiner's triads, grouping elements with similar properties together.

Groups of the Periodic Table are defined as vertical colums. There are 18 groups in the periodic table.

Cesium was discovered in Germany by Robert Bunsen and Gustav Kirchhoff in 1860.

HCl, NH3, PH3, HF, CS, H2CO, H2O have Lewis formulas that do not incorporate a double bond. CS2 has a Lewis formula with a double bond between the C and S atoms.

The quantum numbers used to describe the energy of the electrons of Fr are;

1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2 4d10 5p6 4f14 5d10 6s2 6p6 7s1

The noble gases, column 18 in the most common modern periodic table.

Mercury is commonly used in the batteries of cell phones and laptops.

Nonmetals with lower electron affinity tend to have higher reactivity because they are more likely to gain electrons to achieve a stable electron configuration. This makes them more reactive in chemical reactions as they can readily form bonds with other elements.

it depends on how much water you have. but the density is 1g/cm^(3) .

Yes, fluorine is more reactive than carbon. In fact, fluorine is the most reactive of all the chemical elements. It is never found uncombined in nature. Carbon, however, can be found free in nature in the form of graphite and also diamond. Additionally, carbon is the cornerstone of life as we know it. It is present in all living things, and exists in myriad chemical compounds, both naturally occurring ones and ones created in the laboratory.

A table of contents is a list of the sections or chapters in a book or document, typically found at the beginning. It provides an overview of the structure of the content and helps readers navigate to specific topics or sections within the text.

A coalition is the combination of alliances between different groups. It represents a temporary or permanent partnership formed to achieve common goals or objectives through collaboration and joint efforts.

the periodic table isn't aranged by mass because itd be much more complicated to make sense out of it and itd be inconsistent, uranium is the heaviest element but its the 12th element acording to its atomic number, also all of the gases and liquids would be all over the periodic table

No, phosphorus is not an alkali metal. It is a nonmetal element that is found in the nitrogen group of the periodic table. Alkali metals are found in Group 1 of the periodic table and include elements such as lithium, sodium, and potassium.

Symbols are used in the periodic table to represent elements in a concise and standardized way. Each symbol typically consists of one or two letters derived from the element's name in English, Latin, or another language. Symbols make it easier to identify elements and their properties within the periodic table.

Melting points are ranges usually. It starts when the first crystal of the substance being tested melts and ends when the last crystal melts. Therefore the smallest sample possible and the slowest rate of heating will give the most accurate melting point.

Yes, carnotite is a naturally occurring uranium-vanadium oxide mineral that is radioactive due to its uranium content. It typically emits low levels of radiation, but proper handling and precautions are still advisable when dealing with this mineral.

No metal actually "turns green", although copper and possibly others develop surface layers that are green when exposed to many natural atmospheres.

Copper turns green when it reacts with sulphur (sulfur) in the air, forming copper sulfide.

Energy is typically absorbed to form positive ions through ionization. This process involves removing an electron from a neutral atom or molecule to create a positively charged ion. The energy required to remove the electron is known as ionization energy.

Hyperkalemic PP is also called potassium-sensitive PP.

Because its molecules contain differences between occupied and unoccupied energy levels of electrons that correspond in energy to part of the visible light spectrum. This causes the gas to absorb a noticeable fraction of some wavelenghts of visible lights while being transparent to others. The unabsorbed wavelengths of light correspond to the color of the gas.