Periodic Table

valence electrons, which determine their chemical properties and how they form bonds with other elements. This shared electron configuration gives elements within the same group similar reactivity and properties.

Common elements used to make makeup include minerals, pigments, oils, waxes, and emollients. Other ingredients such as preservatives, fragrances, and vitamins may also be added depending on the type of makeup being formulated. Each product will have a unique combination of these elements to achieve its desired texture, color, and performance.

there are many non metals that are very very reactive. some are even more reactive than some certain metals. there are no exact answers to that but according to me, it should be fluorine.

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Dmitri Mendeleev created the periodic table to organize and classify the known elements based on their properties and atomic weights. He left gaps for undiscovered elements and successfully predicted the properties of some of these missing elements.

I'm unable to display images. However, you can easily find colored periodic tables online by searching for "colored periodic table" in any search engine or visiting chemistry-related websites. Colored periodic tables typically highlight different element groups with distinct colors for easier visualization.

Currently all known enzymes are naturally occurring, as synthetic enzymes (that display any significant enzymatic activity) are yet to be developed, owing to the fact that the true mechanism of enzyme catalysis is still under some dispute (e.g. enegry traps, WCM model etc).

The latin name of Silver is 'argentum', so 'Ag' is two letters of the latin name, which no other element can create.

In the periodic table, the symbols which Silver could have used, i.e. 'S pertains to the' element Sulphur and the next possibility, 'Si' element pertains to Silicon) so silver needed to take another symbol - thus Ag for Argentum.

If you mean the alkali metals, these are all of them, in order:

hydrogen, lithium, sodium, potassium (the stuff in bananas), rubidium, cesium, and francium.

Go to the related link to get a picture of the periodic table.

The most active groups in the periodic table are Group 1 (alkali metals) and Group 17 (halogens). Alkali metals are highly reactive due to their tendency to lose an electron, while halogens are highly reactive due to their tendency to gain an electron to achieve a full outer shell.

The major categories of elements on the periodic table are metals, nonmetals, and metalloids. Metals are typically shiny, malleable, and good conductors of heat and electricity. Nonmetals are usually not shiny, brittle, and poor conductors. Metalloids share properties of both metals and nonmetals.

The first rows of transition metals at the bottom of the periodic table are typically the actinides and lanthanides. These elements are located in the f-block of the periodic table and have partially filled d orbitals. They are known for their unique properties and are commonly used in various applications such as nuclear energy and magnet production.

Dmitri Mendeleev is credited with designing the original periodic table in 1869. He organized the elements based on their atomic mass and chemical properties, which laid the foundation for the modern periodic table.

A flashbulb typically consists of a glass bulb containing a coiled filament made of magnesium or aluminum wire, filled with oxygen or other oxidizing gases, and enclosed in a clear envelope. When an electric current passes through the filament, it ignites and produces a bright flash of light.

For the university one is californium called after California state university.

* After towns or villages: darmstadtium, dubnium, erbium, terbium, ytterbium yttrium, lutetium, holmium, hafnium, berkelium

* After continents: americium, europium

* After countries: francium, germanium, indium, ruthenium, polonium

* After a region : hassium, scandium, thullium

* After a river: rhenium

How many known elements were there in 1789?

Short answer = more than 63

Longer answer = In the 1860's Mendeleev organized the 63 known elements. After this organization there was a boom of new elements being discovered (because we now knew what we were looking for). I'm sure further research would turn up a better answer.

Source: Prentice Hall's Physical Science textbook (2006)

They are used to identify the same material. The -ous being the older form of the name.

The Manganese Sulfate would be more correct if written as Manganese (II) Sulfate. This indicates the lower oxidation state of the Mn atom which is +2.

The term Manganous Sulfate is the older way of identifying the oxidation state.

If you see term Manganic in a molecule's name this is referring to the higher oxidation +3 oxidation state. In current usage it would be Manganese (III).

That is the Atomic Number. The atomic number of an element is equal to the number of protons in the nucleus of an atom of the element.

melting point for alcohols which are solids at room temperature? or freezing points of alcohols? Melting point for any solid is listed in melting point tables. See high school or college organic chemistry books or books with physical properties of materials (eg chem engineering books. Any reference librarian will point to the right book.

Mass number is a property specific to a particular isotope or nuclide of an element, while the usual periodic table include average properties for all the stable, naturally occurring isotopes of each element.

CH3COOH is a pure substance. It is the chemical formula for acetic acid.

Tc, technetium, is bracketed on the periodic table because it is a synthetic element and not found naturally on Earth. The whole number represents its most stable isotope, which is artificially produced in nuclear reactors or particle accelerators.

they are as following:

1) Rutherfordium- Ernest Rutherford

2) Gallium - Gallia

3) Bohrium - Niels Bohr

4) Curium - Pierre and Marie Curie

5) Einsteinium - Elbert Einstein

Mercury and gallium are metallic elements that are liquid at room temperature. Mercury is the only metallic element that is liquid at standard conditions for temperature and pressure. Gallium has a melting point just above room temperature and will melt in your hand.

The atomic radius increases from top to bottom in groups 1 and 2 of the modern periodic table. This happens because the number of energy shells increase and are occupied by the increasing number of electrons. As the subsequent shells are completed they are located further from the nucleus due to the decreasing force of attraction between nucleus and the electrons. This leads to an increase in atomic radius.

== == Atomic radius is a result of the completion of orbitals as atoms get heavier by adding neutrons and protons to the nucleus. The larger nucleus can hold more electrons. The cloud of electrons determines the atomic radius. Each completed orbital (S,P,D or F) takes up room. The higher orbitals have a greater radius . Unlike the old Bohr theory of atoms (little electrons in orbits around the nucleus), the new probability distribution interpretation of the electrons leads to spherical or hourglass shaped volumes.