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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 are some problems with carbon 14?

Carbon-14 is naturally created with the interaction of high-energy cosmic rays with atmospheric nitrogen. As part of the atmosphere, living organisms take in the carbon and incorporate this into living tissues. As long as the organism is alive and breathing, it keeps adding new carbon-14. When the organism dies, it stops gaining carbon-14 - or anything else, of course.

Carbon-14 is slightly radioactive, with a half-life of about 5700 years. If we assume that the atmospheric production of carbon-14 has been steady for the last 100,000 years, we can calculate the approximate age of when the organism died by determining what percentage of carbon-14 still exists in the dead material.

Paleo-archaeologists and anthropologists use this information when studying old cultures and civilizations.

Which symbols represent elements that are gases at room temprature?

Some symbols representing elements that are gases at room temperature include H (hydrogen), He (helium), N (nitrogen), O (oxygen), F (fluorine), Ne (neon), Cl (chlorine), and Ar (argon).

What element on the periodic table belongs to the element that will make a positive two cation?

Group 2 elements such as magnesium, calcium, barium, strontium (and also many elements from transition metals)

What does it mean when a bill is removed from the table?

When a bill is removed from the table, it means that it is being taken up for consideration and debate by the legislative body again. It usually indicates that there is renewed interest or urgency in addressing the bill.

When two compounds react do they only give off only other compounds or elements as well?

both :P the elements and compounds in the original substances will join together to form a new substance, with possible elements left over i.e. oxygen+glucose --> carbon dioxide+water (respiration)

Who is known as the father of the periodic table elements?

Dmitri Ivanovich Mendeleev (1834 - 1907) is considered the father of the periodic table.

Do atoms go up by one on the periodic table in proteins and neutrons?

Atoms do not change in proteins, but elements may vary depending on the composition of amino acids involved. Neutrons are not incorporated into proteins; they are subatomic particles found in the nucleus of an atom, contributing to its mass.

In what are a table's contents displayed in as rows and columns?

A table's contents are displayed in rows and columns in a tabular format. Each row represents a record or entry, while each column represents a specific attribute or field within the dataset. This structure helps organize and present data in a systematic and easy-to-read manner.

What is the group key update period for tp-link?

The group key update period for TP-Link devices is typically around 3,600 seconds, or 1 hour. This means that the group key used for encryption in a Wi-Fi network is re-negotiated and updated every hour to maintain security.

Which group has elements that rarely react?

the noble gases to not like to react, look to the farthest right column for those

What is a group of fairly nonreactive elements in the pariodic table?

Noble gases form a group of fairly nonreactive elements in the periodic table. These elements have a full valence shell of electrons, making them stable and unlikely to form chemical bonds with other elements. Examples include helium, neon, and argon.

Which element in the fifth period has the highest ionization energy?

The element in the fifth period with the highest ionization energy is xenon. Ionization energy generally increases across a period from left to right, so xenon, being on the far right of the period, has the highest ionization energy.

Was Mendeleev's periodic table read horizontally or vertically?

His original 1869 table had the atomic weights increasing down columns, and family members alongside each other in horizontal rows.

His revised and greatly improved 1871 version had atomic weights increasing across rows, and element families in vertical columns, essentially similar to the way a modern Periodic Table is presented.

What are elements found in an organised manner?

Elements found in an organized manner typically have a clear structure or pattern, such as the periodic table of elements or a taxonomy classification system. These elements are arranged based on specific criteria, making it easier to study and understand their relationships and properties. Examples include books in a library, files in a computer directory, or components of a machine.

What are the top three periodic elements in the world?

The top three most abundant elements in the Earth's crust are oxygen, silicon, and aluminum. Oxygen is the most abundant element overall, found in compounds such as water and silicon dioxide; silicon is a key component of rocks and minerals; aluminum is commonly found in minerals and ores.

How would you separate lead sulphate from a mixture of lead sulphate and lead chloride?

Lead sulphate is insoluble in water, while lead chloride is soluble. You can separate the two compounds by adding water to the mixture, which will dissolve the lead chloride and leave the lead sulphate as a solid precipitate. You can then filter out the solid lead sulphate to separate it from the soluble lead chloride.

Why group 6 of periodic table called chaclogen?

Group 6 of the periodic table is called the chalcogens because the elements in this group have properties similar to sulfur, one of the elements in this group. Chalcogen comes from the Greek word "chalkos," which means ore of copper, reflecting that these elements are commonly found in ore minerals.

Is corner the command used to make the size of the table columns reflect the data in the columns?

No, "corner" is not a command used for that purpose. "corner" is a command in some programming languages to refer to the upper-left corner of a table or a window. To make the size of table columns reflect the data, you may need to use commands or functions related to data processing or formatting in the specific programming language or software you are using.

What metallic elements are found in malachite?

Malachite is a copper carbonate hydroxide mineral, with the formula Cu2 CO3 (OH)2, so your answer would be 'copper'

Which region contain stable noble inert gases in other words which elements do not react with other element?

The noble inert gases, also known as noble gases, are found in Group 18 of the periodic table. These elements include helium, neon, argon, krypton, xenon, and radon. They are stable because their outer electron shells are fully filled, making them unlikely to react with other elements.

What do all elements from the periodic table have in common?

Nucleus in the centre (with protons and neutrons) with the electrons revolving around it.

What is the only element in the periodic table that does not belong to a group?

It doesn't entirlely stand alone. there is no gap from hydrogen and the rest of the table. Hydrogen is just simply singular. It only has one proton. No neutron. One of a kind. even though I believe deutrium to be number 2 on the table rather than helium. And neutronium should be classified as element 0. Should be categorized in the periodic tables at all time.

What is the fourth lightest element on the periodic table?

The fourth lightest element on the periodic table is beryllium, with an atomic number of 4.