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Periodic Table
The Periodic Table is a tabular arrangement of the elements in increasing order oftheir atomic numbers, so that elements with similar properties are in the same column. There are 18 columns, called groups, and seven rows, which are called periods, in the modern periodic table. Questions about the Periodic Table: its history and creation, trends, groups/families, and periods are asked in our Periodic Table category.
11,356 Questions
What changes may come that would change the periodic table?
Changes in the number of protons in an element's nucleus would alter its position on the periodic table. The discovery of new elements could lead to the expansion of the periodic table. Advances in technology and research may also reveal new properties of known elements, potentially causing revisions to the periodic table.
Will the periodic table always look this way?
The periodic table may change over time as new elements are discovered or as our understanding of atomic structure evolves. New elements can be added to the table, and their properties may lead to a reorganization of the elements. The overall layout and concepts of the periodic table are likely to remain consistent, but the specific details can change.
What complete family of chemical did mendeleev leave out of his periodic table?
Mendeleev left out the noble gases (Group 18) from his periodic table because they were not discovered yet at the time he developed the table. These elements were later added to the periodic table as they were discovered.
What glowing gases observed during combustion?
Combustion is the general process of burning a material in the presence of Oxygen (O2). The glowing observed is the reaction itself that is taking place. A general example of a combustion reaction would be methane gas being combusted in excess oxygen.
CH4 + 2O2---> CO2 + 2H2O
What does Fr stand for in periodic table?
Fr = Francium - the chemical element of atomic number 87, a radioactive member of the alkali metal group. Francium occurs naturally as a decay product in uranium and thorium ores.
What are the uses of group 1 and 7 elements?
Group 1 elements, such as sodium and potassium, are used in various applications including making soap, fertilizers, and as components in alloys. Group 7 elements, such as chlorine and fluorine, are used in disinfectants, water treatment, and as components in materials like PVC and Teflon.
Does tungsten have a high or low atomic number?
Tungsten (W) has an atomic number of 74. This number is high compared to the whole Periodic Table. There are only 18 more natural elements with a higher number.
The atomic number of titanium is 22. The atomic weight of Ti is 47.88 grams per mole.
See the Web Links to the left of this answer for a periodic table with more information about this element!
Why is neon in the groups and periods of the periodic table?
The noble gases were recognized in the late 1800s, when scientists realized that an entire class of gases was missing from the periodic table of elements. Like other noble gases, neon does not readily form compounds, although it is not, strictly speaking, inert.
Doctors use various elements in their practice, such as medical knowledge, diagnostic tools, medications, surgical techniques, and therapeutic interventions to diagnose and treat medical conditions in patients. They also rely on communication skills, empathy, and a patient-centered approach to provide quality healthcare.
Which metals have the highest melting point?
The metal with the highest melting point is Tungsten (W) at 3410 degrees Celsius (6170 degrees Fahrenheit). However, technically Carbon has a higher melting point, though not under normal atmospheric conditions. This is because it sublimates (turns directly from a solid to a gas) at 6740 degrees Fahrenheit under normal circumstances.
(Carbon also doesn't count because it is not a metal, but a nonmetal).
However, if you are taking consideration of all elements and explore which element has the highest boiling point, then it is Rhenium (Rh), which turns to gaseous form at the temperature of 5592*C (10 097.6*F), followed by Tungsten (W) which boils off at 5540*C (10 004*F).
Hope it was useful...!!!
What s block element is not located in group 1A or group 2A in the periodic table?
One example of a block element that is not located in group 1A or group 2A in the periodic table is carbon, which is a p-block element. Carbon is located in group 4A (14) of the periodic table and is known for its diverse bonding properties, forming a wide range of compounds.
What do you call atoms of the same element with different atomic masses?
They are called isotopes. They have different mass nmbers because they have a different number of neutrons.
How do you find the atomic number of atoms?
Look it up in "Periodic Table of elements"
You can find the number of a particular element by looking at the Periodic Table; you can also do this by counting the number of protons in the nucleus.
What are in the s- and p-blocks of the periodic table?
The s-block of the periodic table consists of groups 1 and 2 elements, alkali metals (Group 1) and alkaline earth metals (Group 2), which have outer s orbital electrons. The p-block consists of groups 13-18 elements, including metals, metalloids, and nonmetals that have outer p orbital electrons.
Why group 7 is called halogens?
Group 7 elements are called halogens because they form salts when they react with metals, such as sodium. The name "halogen" comes from the Greek words for "salt-forming." The group includes elements like fluorine, chlorine, bromine, and iodine.
Why is group 18 on the periodic table a nonreactive group?
Noble gases have completely filled orbitals. They generally have 8 valence electrons (helium has only 2) and have stable electronic configuration. Hence they are chemically inert and generally donot form compounds under normal conditions.
What is the specific gravity of osmium?
The specific gravity of osmium is around 22.59 g/cm³. It is one of the densest naturally occurring elements.
Why do dome element symbols seem unrelated to the element name?
I guess the question is: Why do SOME element symbols etc. This has to do with the language in which the element has been named. lead for example has Pb as the symbol. Pb stands for plumbum which in Latin means lead.... you still recognise the same roots in the profession's name 'plumber'
The same applies for many other seemingly unrelated symbols.
Added:
Some examples
- Sodium: Na from Latin natrium or Arabic ناترون natrun; (perhaps ultimately from Egyptian netjerj) but sodium is from Latin sodanum which was used as a headache remedy.
The name sodium probably originates from the Arabic word suda meaning 'headache' as the headache-alleviating properties of sodium carbonate or soda were well known in early times.
- Potassium: K from Latin kalium, first being isolated from the ashes of plants heated in pots (pot ash > potash).
The term "potash" comes from the old-Dutch word potaschenan old method of making potassium carbonate (K2CO3) was by leaching wood ashes and evaporating the solution in large iron pots, leaving a white residue called "pot ash", which in turn gave the element its modern name.
- Mercury: Hg from Latin hydrargyrum, a Latinized form of the Greek word Ύδραργυρος (hydrargyros), which is a compound word meaning "water-silver" (hydr- = water, argyros = silver) - since it is liquid like 'water' and shiny like 'silver'.
Mercury is named after the Roman god Mercurius and the planet Mercury, both known for speed and mobility.
Mercury is the only metal for which the alchemicalplanetary name became the common name in Anglo-languages. In German(-like) languages 'quicksilver' is used as root name.
Is modern periodic table given by bohr?
No, the modern periodic table is not given by Niels Bohr. The modern periodic table was developed by Dmitri Mendeleev in 1869, while Niels Bohr is known for his contributions to the atomic model, explaining the behavior of electrons in atoms.
Far as I am aware a larger atom (They get bigger going down the table) has its electrons orbiting farther from the nucleus so it has a more tenous hold on them, so they can be lost easier. A reaction is just the exchange of electrons. Most metals (or all, not sure) lose electrons in a reaction. Because non metals have to gain them in a reaction, the smaller the atom the better the grip they can get on them. (electric grip)
What are facts and a fib about the periodic table?
1. Systematic classification and ordering of chemical elements
2. Coherence between atomic structure of the elements and the position in the table.
3. Coherence between the chemical and physical properties of the elements and the position in the table.
4. The nucleus gets bigger and bigger along the period
5. The electron shell gets smaller and smaller along the period.
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etc.
Fibs:
1. the alkali metals are also known as the D-block metals.
- Any more fibs? Please help out I need this too!
What element does not have a latin name but its symbol is different from its name in the table?
Mercury's symbol (Hg) comes from Greek " Ύδραργυρος", or, "Hydrargyrum"meaning "watery silver.
Tungsten's symbol (W) comes from the mineral Wolframite.
Which elements of the periodic table of elements are solids or liquids and which are gases?
Elements on the far left side of the periodic table are very active solids.
Since these elements only have one valance electron they bond easily with almost any other element in the periodic table. Hydrogen is the exception because it has one electron and one proton so it bonds easily but it's not a solid... Really, as you move from the left to the right on the periodic table the elements get less reactive to the point where they do not react to anything at all. The Alkaline Earth Metals1 are the extreme bonding examples while all the way on the other side the Noble Gases, having eight valance electrons, are complete without any bonding. The reason that the elements on the left side of the periodic table are active is because they have low numbers of valance electrons2. The 'goal' of any chemical bond is to have the atoms involved end up with eight valance electrons and become completely stable.
________________________________________________________________________ 1. Alkaline Earth Metals are the most reactive of the elements and are located on the far left of the periodic table. 2. Valance electrons are electrons that are on the far outside of an atom and are used in chemical bonding.
--Byoen
