answersLogoWhite

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

Is it possible for atoms of the same element to have different chemical properties?

Atoms of the same element differ in the number of neutrons in their nuclei. All atoms of a given element have the same number of protons, of course. The number of protons in a nucleus determines which element the atom is. But the number of neutrons can vary, and these different "versions" of a given element are called isotopes of that element. See the related question, which is linked below.

What block is Ag in the periodic table of elements?

Ag is the chemical symbol of silver, which is number 47 on the periodic table.

Is Neon metal or non metal conductor?

Neon is neither a metal nor non-metal. it is a noble gas.

What does np stand for on the periodic table of elemnts?

Np stands for the element neptunium.

its atomic number is93 and atomic weight is 273

What is silicons group numbers?

Silicon is found in group 14 of the periodic table. It has 4 valence electrons in its outer shell.

What is the most stable state of an atom called?

The most stable state of an atom is called the ground state. This is when the electrons occupy the lowest energy levels available to them.

What diatomic element has a bond between atoms?

Oxygen (O2) is a diatomic element with a bond between the atoms. It forms a covalent bond, where the two oxygen atoms share electrons to achieve a more stable electron configuration.

What are atoms with the same atomic number?

Molecules is actually an incorrect answer, as molecules are assortments of atoms that are bonded together via their electron(s) either by covalent or ionic bonds. An atomic number is a number that signifies an atoms number of protons. All elements are atoms, and there are 118 known elements, all with different atomic numbers, for they each have different amounts of protons. In essence, the atomic number DEFINES the atom, for instance Hydrogen (H+), has only one proton, while Ununotium has 118 protons. So if an atom has a different number of protons in its nucleus than another atom, then they always will be different elements. Therefore they are not "grouped" into anything other that most basically the periodic table.

So to answer your question directly, there is no "group" to speak of, for all atoms with the same atomic number are essentially the same type of atom.

You may have meant neutrons, as atoms that are the same but with varying numbers of neutrons can still be the same element, yet differ in neutrons in the nucleus. These are called Isotopes.

What is the element used to make expensive forks spoons and tableware?

Silver (Ag) is the element commonly used to make expensive forks, spoons, and tableware due to its luster, malleability, and resistance to corrosion. Silverware made from sterling silver contains 92.5% silver and 7.5% metal alloy for added strength.

What does O₂ H₂ N₂ mean?

O=O A molecule/diatomic atom of gaseous oxygen. Covalently double bonded.

H-H A molecule/diatomic atom of gaseous hydrogen. Covalently single bonded.

N to N A molecule/diatomic atom of gaseous nitrogen. Covalently triple bonded.

Why atomic radius remains almost unchanged as you move through period 2 from group 14 to 18?

Electrons are all being added to the same "p" sublevel so no new energy levels are being added. Actually as you go across the size will decrease slightly due to the increase in the charge of the nucleus.

When did Dmitri Mendeleev discovered technetium?

Dmitri Mendeleev did not discover technetium. Technetium was discovered in 1937 by Italian scientists Carlo Perrier and Emilio Segrè. Mendeleev is known for creating the periodic table of elements in 1869.

When are heavy nuclei most stable?

Heavy nuclei are most stable when their neutron-to-proton ratio approaches 1. Nuclei with too many or too few neutrons compared to protons will have higher instability. This balance contributes to stability by preventing the repulsion between protons from overpowering the attractive nuclear force.

When an atom loses a electron it becomes a what?

Atoms balance out their charges by having the same amount of protons as electrons. Since protons are positive, and electrons are negative, losing an electron increases the positive charge of an atom. This makes it an ANION. If an atom were to gain an electron, it would make it a CATION.

Why are group 7 and group 1 elements usually found as compounds?

Group 7 elements (such as halogens) and group 1 elements (alkali metals) are highly reactive and tend to form compounds rather than exist in their pure elemental forms in nature. This is because they have a strong tendency to react with other elements to achieve a more stable electron configuration.

Who create the first periodic table?

Mendeleev developed the first periodic table and Mosely later modernized it.

Where are the metaloids located at on the peroidic table?

Metalloids are located in a diagonal line between the metals and nonmetals on the periodic table. They include elements such as boron, silicon, germanium, arsenic, antimony, and tellurium. Metalloids exhibit properties of both metals and nonmetals.

What is the smallest number of parts in a compound?

The smallest number of parts in a compound is one, meaning that it consists of a single type of atom. These are known as elements and cannot be broken down further by ordinary chemical processes. Examples include oxygen (O2) or sodium (Na).

What is the difference between a filled and an unfilled orbital?

A filled orbital has either 2 electrons (if it is the first shell of an atom) or 8 electrons. This is the highest number of electrons these shell can hold Every orbital tends to complete itself to form a stable element.

A filled orbital could be any orbital, either 1st, 2nd, second last or last shell of the atom.

An unfilled orbital always has atleast one less electron than the shell can hold. It is always the last shell of an atom and always makes the atom unstable as atom tends to acquire inertness by trying to get this unfilled oribital filled.

Do non metal elements only form positive ions?

Metals tend to form positive ions also known as cations.

Who coined the term element?

The term "element" was coined by the ancient Greek philosopher Empedocles in the 5th century BCE. He proposed that everything in the universe was composed of four basic elements: earth, water, air, and fire.

What is zinc atomic number?

Zinc is a 3d metal element. we use it for galvanize iron. zinc got 30 protons in a atom.

Why do metals on the left hand side of the of the periodic table are said to be highly reducing?

Reducing agent reduces others and oxidised itself.reduction means gain of electrons and oxidation means loss of electrons.as the metals on left hand side of the periodic table have lower ionisation potential so they are easily lose electrons and oxidised and reduces others.so they are highly reducing.

How does the octet rule relate how active an element is?

The octet rule states that all elements form ions to reach 8 valance electrons, or the nearest noble gas. If an element is a noble gas, it already has 8 valance electrons, therefore does not need to form ions to bond with other ions, thus becoming un-reactive.