Periodic Table

This statement is a fundamental principle of the periodic law, proposed by Dmitri Mendeleev. The periodic law states that when elements are arranged by increasing atomic number, there will be a periodic repetition of their properties.

This statement is incorrect. Inner transition elements are a subset of transition elements, and they refer specifically to the lanthanides and actinides series. There are more transition elements (d-block elements) than inner transition elements in the periodic table.

There is no Group 15 - however, element number 15 - Phosphorus - is in the periodic tables' Group V A.

This is known as the "tablecloth trick" or "tablecloth pull," where the tablecloth is quickly yanked from under a set table while leaving the dishes undisturbed due to inertia. It requires precise timing and technique to ensure that the dishes remain in place while the tablecloth is swiftly removed.

Countries that use uranium for energy production include the United States, France, China, Russia, and Canada. Uranium is used in nuclear power plants to generate electricity through a process called nuclear fission. These countries rely on uranium as a key fuel source to meet their energy needs.

Aurum or Gold. Because besides being used to make jewelleries & parts of electronic components, it's value increases steadily despite the volatile economy. It is a common type of investment when nothing else remains stable.

Metallic is any number of chemical elements, such as iron or copper, brass or steel, gold or silver, that amongst other things, are good conductors of heat and electricity.

Non metallic items include wood and plastic, paper and cloth and so on

Group 1 metals are very reactive because they have one electron in their outer shell, which they readily lose to achieve a stable electron configuration. Group 7 non-metals are very reactive because they are one electron short of a full outer shell, so they can easily accept an electron to achieve stability. This makes both group 1 metals and group 7 non-metals highly reactive in order to achieve a stable electron configuration.

1. Sodium nitrate (NaNO3)
2. Potassium nitrate (KNO3)
3. Calcium nitrate (Ca(NO3)2)

Elements in the same family (or group) have the same amount of electrons in their outer shell. For Example, all elements in Group 1 have 1 electron in their outer shells.

No, actinoids are a group of elements that include both transuranium elements (elements with atomic number greater than 92) and non-transuranium elements. Transuranium elements are specifically those that have atomic numbers higher than uranium (92).

metals are hard,lustrous, malleable, ductile, sonorousand good conductors of heat and electricity.The materials which have this properties are called metals. Non metals are soft and dull when we take it into hand press hard they convert into powder.They are poor conductors of heat and electricity.

The periodic table would be disturbed only if isotopes of a new element are discovered, because a periodic table is based on order of atomic number, not atomic mass. If new isotopes of a previously known element were discovered, the atomic mass shown in the periodic table might be changed, but this is very unlikely because the atomic masses shown in a periodic table are based on the naturally occurring distribution of isotopes, and any newly discovered isotopes would probably occur only in very small fractions of the total.

The most electronegative elements are found in the top right corner of the periodic table, in the halogen group (Group 17). These elements include fluorine, chlorine, bromine, iodine, and astatine.

No. An element, by definition, does not contain any other element.

The only element that contains carbon is carbon; however, carbon does make compounds with other elements - for example, carbon dioxide and carbon monoxide with oxygen.

It is the noble gas family or the group XVIII.

Inert gases can also be called noble gases. An example is Helium.

The s-block in the periodic table consists of groups 1 and 2, which include elements that have their outermost electrons in the s orbital. These elements are typically metals and have similar chemical properties due to the configuration of their outermost electrons. The s-block elements are known for being reactive, easily forming positive ions by losing electrons.

The periodic table is designed based on the atomic number (number of protons in the nucleus) and the electron configuration of the elements. Elements are arranged in rows and columns based on their similarities in properties. This organization helps predict the behavior and properties of elements.

Number 45 on the periodic table is Rhodium. It is a group 9, period 5 element. It is a silvery white metal that is used as a coating to prevent wear on high quality science equipment and with platinum to make thermocouples. Also used in headlight reflectors, telephone relays, fountain pen points and airplane spark plugs.

Group 1 in the periodic table is called the alkali metals. These elements are highly reactive and have one electron in their outermost shell. Examples include lithium, sodium, and potassium.

The equation for the beta decay of 137Cs:55137Cs --> 56137Ba + -10e

where the e is a negative beta particle or electron.

Rg stands for Roentgenium, which is a synthetic element with atomic number 111. It is a highly radioactive element that does not exist in nature and has only been created in the laboratory.

The periodic table of elements was created by Dmitri Mendeleev in 1869. It organizes elements by atomic number, electron configuration, and recurring chemical properties to show relationships between elements. It is a fundamental tool in chemistry for predicting chemical behavior and properties of elements.

I am thinking either Dimitri Mendeleev or Henry Mosely