0
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
Marriages were arranged for various reasons, including strengthening social ties, ensuring financial stability, securing political alliances, and preserving family heritage. This practice was common in many cultures and societies throughout history as a way to maintain social order and ensure the well-being of individuals and families.
What is the 116th element on the periodic table?
The element with atomic number 116 is the recently discovered, but not yet officially named Ununhexium (Uuh). It is a post-transition metal in the Group 16(6) - Oxygen family and is the latest element to be discovered. It has 116 electrons in 7 shells with 6 electrons in the outer shell.
Which is more reactive - helium or hydrogen?
I'm not sure of the exacts, but I'm fairly sure that oxygen is more reactive than hydrogen. For example, when testing with a smoldering wood splint, in the presence of oxygen gas the flame is reignited, while in the presence of hydrogen gas the splint simply glows. Again, not sure of the exacts myself, but it may have something to do with the fact that oxygen is diatomic and has a double bond with itself, leaving each oxygen atom with two unbonded pairs of valence electrons, making it more reactive. Hydrogen is also diatomic, and that means that each hydrogen atom is used in the single covalent bond, leaving it with no unbonded valence electrons, making it presumably less reactive than oxygen.
Where is the arrange by button?
The arrange by button is typically located at the top of a list or grid view in software applications or websites. It allows users to sort items based on certain criteria such as date, name, size, or type. Look for icons or headings like "Sort" or "Arrange" on the interface to access this functionality.
Elements from Group 3 to 12 are called Transition Elements. These elements are heavy metals. They lie between the strongly eloctropositive elements to their right and the electronegative elements ( non-metals) to their left.
These metals mainly have 2 valence electronswith the metallic character decreasing from left to right of their period.
Where are the metals and nonmetals located on the peridoic table?
Metals are located on the left side of the periodic table, while nonmetals are located on the right side. There is a diagonal line dividing the metals and nonmetals, with metalloids lying along this line.
Were the group 4 the cause all siblings?
No, while genetics play a role in alcoholism, it is not solely determined by family history. Environmental factors and personal choices also contribute to the development of alcohol use disorders. Family history can increase the risk of developing alcoholism, but it is not the sole cause.
What are the top and bottom numbers of the isotopic notation for carbon 14?
The top number is 14 and the bottom number is 6. The latter is the same for any isotope of carbon, but the top number changes with the number of neutrons in the isotope, because the top number is the mass number, which is defined to be the sum of the numbers of protons and neutrons.
Where is the dividing line on the periodic table between metals and non metals?
Aluminum, Gallium, Tin, Bismuth, and everything to their left (excluding Hydrogen) are metals.
Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium, and Polonium are the metalloids.
Carbon, Phosphorus, Selenium, Iodine, Astatine and everything to their right (including Hydrogen) are all nonmetals.
Is element 55 cesium or caesium?
The name of this element is usually spelled "cesium" in the United States but often spelled "caesium" in England and some former English colonies.
Where are reactive metals on the periodic table?
Reactive metals are typically found on the left side of the periodic table. These metals have a tendency to lose electrons and form positive ions when they react with other elements. Examples include alkali metals like sodium and alkali earth metals like calcium.
Where does unreactive metals go in the periodica table?
Unreactive metals are typically found in the far right column of the periodic table, in group 18 known as the noble gases. These metals have a full outer electron shell, making them stable and unreactive. Examples include helium, neon, and argon.
How do you figure out how many electrons are in groups 13-18?
The total number of electrons in any atom is the same as the atomic number. The number of valence electrons in an atom in columns 13 - 18 is the second digit of the column number.
What does No stand for on the periodic table?
NO is a compound called nitrous oxide and is not on the periodic table.
It is a combination of Nitrogen and Oxygen (N for nitrogen and O for oxygen)
Periodic table lists only elements and not compounds.
What does Pd stand for on the periodic table?
"PDS" can stand for many things. Among the most popular are as follows
- Public Distribution System
- Particularly Dangerous Situation, which is a type of tornado watch issued by the United States Storm Prediction Center when the threat for tornadoes is particularly severe
- Precision Drilling Corporation - this is their NYSE stock symbol
- Planetary Data System - NASA's archive of data from planetary observation missions
- Party of Democratic Socialism - a political party in both Germany and India
- Pound Sterling - currency of the UK
- Photothermal Deflection Spectroscopy
What region on the periodic table has atoms that rarely if ever chemically bond?
Noble Gases: Because Noble Gases are already in a stable form, they are not as likely to bond with other atoms as are those farther from a stable form.
Noble Gases are found in group VIII, which is the far rightmost column.
What does Tb stand for on the perodic table?
Te = Terbium.
Lanthanoid
atomic # 65
Mass # 158.92 [Xe] 4f9 6s2
What does Tc stand for in the periodic table?
Technetium is the chemical element with atomic number 43 and symbol Tc.
What does Tb stand for on the periodic table?
Tb stands for the element Terbium. which has an atomic number of 65, atomic weight of 158.9253, its in the lnthanoids, block f, period 6, has a density of 8.23 g/cm^3. is a solid, and has a boiling point of 3500k, melting point of 1629k, and has a electronegetivity of 1.1
What is unreactive and has a full shell on the periodic table?
A noble gas, such as helium or neon, is unreactive and has a full outer electron shell on the periodic table. This full outer shell makes them stable and less likely to form chemical bonds with other elements.
What is the trend found in Period 3 on the Periodic Table as the elements increase in atomic number?
1-Atomic size = decreases
2-Ioniztion energy = increases
3-Electronegativity = increases (except Argon)
4-Metallic character = decreases
5-Melting point = first increases then decreases
What is the number on the periodic table for sodium?
The atomic number of sodium is 11. Other numbers are 3rd period and column 1.
What does the color of an element on a periodic table indicate at room temperature?
The color of an element on a periodic table does not provide information about its properties at room temperature. The color usually represents the state of the element in its most stable form or as it appears in nature; for example, gases are often depicted in blue, metals in grey, and nonmetals in various colors.
What does EU stand on the periodic table?
EU stands for Europium on the periodic table. It is a rare earth element that is commonly used in the production of phosphors for electronic devices such as TVs and computer screens. Its atomic number is 63.
