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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
Why doesn't salt dissolve in baby oil?
Salt is not soluble in baby oil because baby oil is a nonpolar substance, while salt is a polar substance. Polar substances dissolve best in other polar substances, and nonpolar substances dissolve best in other nonpolar substances. In this case, the polarity difference between salt and baby oil prevents them from mixing or dissolving into each other.
What does an element's atomic number tell us?
An element's atomic number tells us the number of protons in an atom of that element. It is used to uniquely identify the element and determine its placement on the periodic table. The atomic number also corresponds to the number of electrons in a neutral atom of that element.
China uses uranium as a fuel source in nuclear power plants to generate electricity. Uranium undergoes nuclear fission in a controlled manner, releasing energy that is used to produce electricity. China has been expanding its nuclear energy capacity to meet growing energy demands and reduce reliance on fossil fuels.
What is rutheniums state of matter at room temperature?
is rutheniums a solid liquid or gas
2. Ruthenium is a white, very shiny metal, allied to the platinum group metals. It is pretty uncommon.
We mine about 12 tonnes of this metal each year, from an estimated world reserves of about 5000 tonnes.
Why do some elements have names and symbol that do not match their English names?
Because there are languages other than English, and elements have different names in those languages.
Some of the symbols are taken from those languages instead. Latin is probably the most common; it's responsible for Fe, Na, K, Cu, Ag, Au, Sn, Sb, and Pb (at least... there may be a few others I missed).
Tungsten is called Wolfram in some countries, and its symbol W comes from that name.
Where are the most active nonmetals found on the periodic table?
The most active nonmetals on the periodic table are typically found in Group 17, also known as the halogens. This group includes elements such as fluorine, chlorine, bromine, and iodine, which are known for their high reactivity and tendency to form compounds with metals.
What group of elements act like metals and nonmetals?
its metalloids or semimetals which are found in elements such as....boron,aluminum,gallium,indium,tallium,ununtrium,carbon,silicon,germanium,tin,lead,ununqaudium,nitroen,phosphurs,arsenic,antimony,bismuth,ununpentium,oxygen,sulfur,selenium,tellurium,polonium,
and that's all of them i believe...hope i asissted some1!
What element has an atomic number of 7?
The element with an atomic number of 7 is nitrogen. It is a nonmetal that is essential for various biological processes and is commonly found in the Earth's atmosphere.
Atoms don't combine to form elements, atoms are elements. Atoms are defined as the smallest particles that contains all the properties of an element. Atoms combine to form chemical compounds.
How many elements occur naturally in the Earth's crust?
The Earth's crust consists of the following elements and percentages: # Oxygen--47% # Silicon--28% # Aluminum--8% # Iron--5% # Calcium--4% # Sodium--3% # Potassium--3% # Magnesium--2% # Titanium--0.5% # All others--<1%
Is the element neon magnetic or not?
Only some metals, with a special electron configuration could get magnetic.
The most well known metals, that could get magnetic are Iron (Fe), Cobalt (Co) and Nickel (Ni). Also you can find metals in the category of rare earth elements, that could get magnetic.
Neon could not get magnetic for two reasons:
1. It is a nonmetal.
2. It has a stable electron configuration.
1. If you think to halogens: fluorine, chlorine, iodine, bromine, astatine, ununseptium
2. If you think to chemical compounds: halides or halogenides are the binary compounds with metals of the above mentioned elements (but also exist organic halides, etc.). Some halides exist as natural minerals.
What elements are radioactive?
There are a lot of radioactive elements:
Technetium, Promethium, Polonium, Astatine, Radon, Francium...
Here is the whole list: http://periodictable.com/Elements/Radioactive
What does the periodic table have?
The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties. It shows the relationships between elements and helps predict their behaviors and properties. It is a fundamental tool in chemistry for understanding the building blocks of matter.
How many solids are in the periodic table?
There are 118 elements in the periodic table, and most of them exist in solid form at room temperature and pressure. About 80% of the elements are classified as metals, with most of them being solids.
When an metal and a non-metal are combined what solid do they make?
There is no rule for this. It depends on which metal and non-metal is combined. There is no one general name for componends that are created in this, let`s call them, combinations of metal and non-metal. Read this few exemples in order to consider thet there is no name (general) for those solids.
1. If you mix liquid iron with small amounts of carbon, you are getting steel.
2. If you mix some metals with carbon, you get compaunds classefied as carbides
3. if you mix some metals with nitrogen, you are getting compaunds classefied as nitrides
4. If you mix some metals with hydrogene, you are getting compaunds classefied as hydrides (metalic hydrides)
It is possible to find more exemples like this, but the most important is that is not possible to put those compaunds in one class.
Another possibility is that you mix some metalic compaunds with non-mtalic compaunds, like bases and acides, in that case you are getting salts, but it is important to know that salts are not binar compaunds (made of two components). They can be, but in most cases they are not.
What are facts about ''lithium''?
lithium is toxic to man and animal also it is a soft, silvery, highly reactive metallic element that is used as a heat transfer medium, in thermo-nuclear weapons, and in various alloys, ceramics, and optical forms of glass.
- Lithium was discovered by Johann Arfvedson.
- It was discovered in 1817.
- Lithium was discovered in the mineral petalite
- Lithium derives from the Greek word lithos for stone.
- Lithium is the third element on the periodic table.
- Lithium is in group 1 and period 2.
- The symbol for lithium is Li.
- The atomic weight of lithium is 6.941.
- Lithium has a melting point of 180.54°C.
- The boiling point of Lithium is 1342°C.
- Lithium is the lightest of the metals.
- It has a density of half of water.
- Lithium has the highest specific heat of any solid element.
- Metallic lithium is silvery in appearance.
- Lithium reacts with water.
- Lithium as a metal itself burns a bright white.
- Lithium is corrosive and requires special handling.
- Lithium is used in heat transfer applications.
- It is used as an alloying agent,
- It is used in synthesizing organic compounds,
- Lithium is added to glasses and ceramics. I
- Lithium is an Alkali Metal
- Lithium has 1 oxidation state
- This is one of the only metals that cannot be found in its pure form.
- It has two isotopes; Lithium-7 (92.5%) and Lithium-6 (7.5%).
- It also has three radio-active isotopes: Li-5, Li-8, and Li-9.
- Lithium has 3 protons, 3 electrons, and 4 neutrons
- It is used as a Drug, to help people with Bipolar Disorders or Manic Depressions. Bipolar Disorders are not curable though but its medicine can help you.
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Uncombined halogens are elements from Group 17 of the periodic table that exist as diatomic molecules in their natural state, such as fluorine (F₂), chlorine (Cl₂), bromine (Br₂), and iodine (I₂). They are highly reactive due to their tendency to gain an electron to achieve a stable octet configuration.
No, oxygen is not a metalloid. Oxygen is a nonmetal, located in group 16 of the periodic table.
How many natural occurring elements are there?
92
90, technetium and promethium are radioactive with short halflives, they do not occur naturally.
Of the 118 elements that are known, 94 occur naturally. The elements that do not occur on earth naturally, have been produced artificially. Some of the elements that do not occur on earth naturally have been detected in other parts of the universe. See link for more information.
Tc and Pm of number 1-92 had not been found naturally until fairly recently, but now they have. Promethium, technetium, neptunium and plutonium are now considered natural chemical elements as trace quantities have been found in nature; consequently, 94 natural chemical elements.
We know today there are 118 elements total. So far.
94 are considered natural elements as we can add promethium, plutonium and neptunium to natural elements because these elements exist in nature in ultratiny trace quantities.
About thirty native elements are known to occur naturally, by themselves, in pure form, uncombined with other elements into minerals. They include metals like copper, gold, lead, and iron; semi-metals like antimony, arsenic, bismuth, and tellurium, and non-metals like diamond, sulfur, and selenium.
Some elements decay into other elements very quickly and very little of them remain. However they can be produced in laboratories and during supernova explosions.
90, technetium and promethium are radioactive with short halflives, they do not occur naturally.
Astatine has an even shorter half life, being furiously radioactive. Make it 89 ?
90 elements out of the first 92 elements are naturally occurring
There are 88 naturally-occurring chemical elements
90, technetium and promethium are radioactive with short halflives, they do not occur naturally.
98
Why is Hg the symbol for mercury?
The old name for Merury is hydrargyrum from hydr- meaning water and argyros meaning silver. Mercury is a liquid silvery metal and was, in fact, known as quicksilver. Anyway, the chemical symbol comes from hydrargyrum.
When an element emits a beta particle, it transforms into an element that occupies the place immediately following it in the periodic table. This is because beta decay involves the transformation of a neutron into a proton, increasing the atomic number by one.
Why is Palladium on the periodic table?
Palladium is a chemical element that is included in the periodic table because of its unique properties and atomic structure. It is classified as a transition metal and is known for its high corrosion resistance and catalytic properties.
Where is arsenic located on the periodic table?
Arsenic(As) is a metalloid present in group 15 in the periodic table.
It is part of the p-block elements and a member of the Nitrogen family.It is metallic grey in color.
all you need is that it is just a metalloid
How are the elements arranged?
Elements are arranged on the periodic table based on their atomic number, which is the number of protons in their nucleus. This arrangement groups elements with similar properties in columns called groups or families, while elements in the same period have the same number of electron shells.
