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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

How many periods do people have in a lifetime?

On average, people have around 450 periods in their lifetime. This number can vary widely based on factors such as health conditions, hormonal fluctuations, and use of birth control.

How many blocks are there in modern periodic table and what are their names?

modern periodic table is divided in four blocks whose names are s ,p,d and f ............by syed mujtaba haider (the educators capital campus ibd)

Which are only two elements in the periodic table named after woman?

Curium is named after Marie Curie and meitnerium is named after Lise Meitner.

What is your William Fetner table worth?

I'm a digital assistant and I don't have information on current market values. You can check online marketplaces like eBay or Etsy to get an idea of the value of your William Fetner table. Additionally, you may consider getting a professional appraisal for an accurate assessment.

What is the property of an neutral atom which defines its chemical behavior and fixes its position in the periodic table?

The number of protons in the nucleus of a neutral atom, known as its atomic number, is the property that defines its chemical behavior and determines its position in the periodic table. The atomic number corresponds to the number of electrons in the neutral atom, which plays a crucial role in determining its reactivity and ability to form chemical bonds with other atoms.

What properties make francium appropriate for laboratories use only?

Francium is highly reactive and unstable, making it dangerous to handle. It has a short half-life, which limits its practical use. Additionally, francium is rare and expensive to produce, making it impractical for widespread applications outside of controlled laboratory settings.

What is the basis for the organization of the modern periodic table is?

The modern periodic table does a lot of things. It organizes elements in order of electron orbitals for one thing (1s, 2s, 2p, 3s, 3p, 4s, ect..). It also has all noble gases stacked on top of each other helping to determine the columns of 1-8 valence electrons. It seperates all metals from nonmetals and elements in the same column will have similar physical and chemical properties.

What are the uses of zigzag rule?

The zigzag rule is used to determine the configuration of stereocenters in molecules. It helps to assign R or S configurations based on the priority of substituents attached to the stereocenter. This rule is important in organic chemistry for understanding the spatial arrangement of molecules.

What is the maximum number of entries that can be placed in the chained hash table?

The maximum number of entries that can be placed in a chained hash table is determined by the size of the underlying array used for storage. Each bucket in the array can hold multiple entries due to chaining, so the total number of entries that can be stored is dependent on the size of the array and the hashing function used.

What information do the periods number give you?

The periods in the periodic table tell you the energy level where the last electrons are being added. So, in period 1, the outermost electrons are in the first energy level or shell. In the 3rd period, the outermost electrons reside the the 3rd energy level, and so on.

What are the non metals in halogens?

All halogens are nonmetals, with the possible exception of astatine, which has no stable isotopes (its MOST stable isotope has a half-life of about 8 hours) and has never been observed in bulk. Astatine may be a semiconductor or even metallic in character; we just don't really know.

What is an ornamental centrepiece for a table called for fruit or flowersd?

A table centrepiece for fruit or flowers is typically referred to as a "fruit bowl" or a "floral arrangement." These are decorative items used to enhance the aesthetics of a table setting.

What is the compound MgH2?

Magnesium hydride, also known as MgH2, is a white, crystalline solid that is used as a hydrogen storage material. It can release hydrogen gas when heated, making it a promising candidate for fuel cell applications.

An ornamental centrepiece for a table - what is it called?

It is called a centerpiece. It is a decorative object placed in the middle of a table to enhance the table's appearance.

What precious metal has the symbol ''AG'' on the periodic table of the elements?

The precious metal with the symbol ''AG'' on the periodic table of elements is silver.

Which of the following is most likely to be a gas at room temperature CH4 MgO CaF2 FeCl3 LiF?

N2 - nitrogen gas - is gaseous at "room temperature". Nitrogen is about 80% of our atmosphere.

K2S, potassium sulfide, is a solid.

C8H18, or CH3(CH2)6CH3, is octane, a liquid component of gasoline.

H2O is water, a liquid at room temperature. (Unless you are an Eskimo.)

CaF2, Calcium Fluorate, is a solid called "fluorospar".

Which answer best explains how the modern periodic table was derived?

The modern periodic table was derived based on the periodic law, which states that the properties of elements are a periodic function of their atomic number. Dmitri Mendeleev and Lothar Meyer independently developed versions of the periodic table by arranging elements in order of increasing atomic number and grouping elements with similar properties together. Mendeleev's table also left gaps for undiscovered elements, allowing for the prediction of properties of these elements.

What element has 5engry levels and is in group 2?

The element that has 5 energy levels and is in group 2 of the periodic table is Calcium (Ca). It has 20 electrons in total, with 2 in the first energy level and 8 each in the second and third energy levels, and 2 in the fourth energy level.

What are the parts of gueridon table?

A gueridon table typically consists of a circular or oval-shaped top, a pedestal or leg support system, and sometimes a lower shelf for additional storage. Some gueridon tables also feature wheels for mobility, making it easier to move the table when required.

Which element on the periodic table has 54 electrons?

Elements on the periodic table are arranged according to the number of protons in their nucleus, also known as their atomic number.

54th element on the periodic table is Xenon.

Would moving from left to right be a form of spatial order?

Yes, moving from left to right is a form of spatial order. It follows a specific direction and sequence, typically associated with reading or the chronological progression of events. This type of spatial order can help organize information and convey a sense of structure to the audience.

What is the highest numbered element in the periodic table to be natural?

Plutonium (atomic number 94) is the last element in the periodic table that may be found naturally, in trace amounts.