The most reactive metal on the planet is xtalt. The most chemically active nonmetal is apstrom. The lightest element on the planet is called pfsst (Pf), while the heaviest element is called elrado (El). 6.
Which element in period four is the most chemically active nonmetal?
Since the noble gases are a special group because of their lack of reactivity , the element fluorine is the most reactive nonmetal. Ask Question. Fluorine F located in period 4 group 17 of the periodic table :.
What metal is the most active?
The most active metals in the activity series are lithium, sodium, rubidium, potassium, cesium, calcium, strontium and barium. These elements belong to groups IA and IIA of the periodic table.
What is the heaviest element?
The heaviest naturally stable element is uranium, but over the years physicists have used accelerators to synthesize larger, heavier elements. In 2006, physicists in the United States and Russia created element 118.
Which is the most reactive alien metal?
The most reactive metal on the planet is xtalt. The most chemically active nonmetal is apstrom.
Which is the least reactive metal?
Platinum is the least reactive of all the options. Aluminium, iron are also formed in combined forms in the natural surroundings.
Which family of elements gains electrons most easily?
The Halogens of Group17 (VIIA) gain electrons most easily because these elements are highly electonegative in nature and have the electron affinity.
Which is the largest atom in the third period?
As a general rule, atomic radii for main group elements increases moving left across a period. Therefore, Na is expected to have the largest atomic radius in the third period.
Is BR a bromine?
Bromine is a chemical element with symbol Br and atomic number 35. Classified as a halogen, Bromine is a liquid at room temperature.
How can you tell which metal is more reactive?
The primary difference between metals is the ease with which they undergo chemical reactions. The elements toward the bottom left corner of the periodic table are the metals that are the most active in the sense of being the most reactive.
Which metal is stored in kerosene?
Sodium and Potassium are highly reactive metals and react vigorously with the oxygen, carbon dioxide and moisture present in the air such that it may even cause a fire. To prevent this explosive reaction, Sodium is kept immersed in kerosene because Sodium doesn’t react with kerosene.
What element touches the zigzag line but is a metal?
Yazzer (Yz) touches the zigzag line, but it’s a metal, not a metalloid. The lightest element of all is called pfsst (Pf).
What metalloid has the highest atomic mass?
Leonardion is the metalloid with the greatest atomic mass.
Which atom has the smallest atomic weight?
Hydrogen (H) is the element with the smallest atomic mass. It consists of one proton and one electron.
Can an atom have 12 electrons?
So… for the element of MAGNESIUM, you already know that the atomic number tells you the number of electrons. That means there are 12 electrons in a magnesium atom.
Which atom is the largest?
Cesium (Cs), tucked in the lower left hand corner of the table, has the largest known atoms. The atomic radius of Cs is given variously as 273.1 pm , 265 pm , 265.5 pm or 260 pm .
What do you call the element from atomic number 57 71?
Lanthanoid, also called lanthanide, any of the series of 15 consecutive chemical elements in the periodic table from lanthanum to lutetium (atomic numbers 57–71). With scandium and yttrium, they make up the rare-earth metals.
Which element is hardest?
Chances are you have seen it. The hardest pure element is carbon in the form of a diamond. Diamond is not the hardest substance known to man. Some ceramics are harder, but they consist of multiple elements.
Which is the rarest element on earth?
A team of researchers using the ISOLDE nuclear-physics facility at CERN has measured for the first time the so-called electron affinity of the chemical element astatine, the rarest naturally occurring element on Earth.
Which is the lightest gas in the world?
Hydrogen, H, is the lightest of all gases and the most abundant element in the universe. It has an atomic number of 1 and an atomic weight of 1.00794. is a highly reactive colorless gas and the most abundant in the universe.
How do you know if a metal is more reactive than hydrogen?
Whether hydrogen or a metal is produced at the cathode depends on the position of the metal in the metal reactivity series : the metal is produced at the cathode if it is less reactive than hydrogen. hydrogen is produced at the cathode if the metal is more reactive than hydrogen.