What element has 55 as the atomic number?

Caesium
Caesium (IUPAC spelling) (also spelled cesium in American English) is a chemical element with the symbol Cs and atomic number 55. It is a soft, silvery-golden alkali metal with a melting point of 28.5 °C (83.3 °F), which makes it one of only five elemental metals that are liquid at or near room temperature.

What is cesium found in?

1860
Caesium/Discovered

What is cesium used for in everyday life?

Cesium is used to help drill oil and make vacuum tubes. The most common everyday use for cesium is with the GPS on your cell phone. Cesium clocks is the more accurate term for atomic clocks, since cesium is used in these clocks.

What is RN on the periodic table?

radon (Rn), chemical element, a heavy radioactive gas of Group 18 (noble gases) of the periodic table, generated by the radioactive decay of radium. (Radon was originally called radium emanation.) Radon is a colourless gas, 7.5 times heavier than air and more than 100 times heavier than hydrogen.

What is RA on the periodic table?

radium (Ra), radioactive chemical element, the heaviest of the alkaline-earth metals of Group 2 (IIa) of the periodic table. Radium is a silvery white metal that does not occur free in nature.

What color is cesium?

gold
Caesium is a soft, gold-coloured metal that is quickly attacked by air and reacts explosively in water.

Is cesium a heavy metal?

Heavy metals are generally defined as metals with relatively high densities, atomic weights, or atomic numbers….List of heavy metals based on density.

Hydrogen Caesium
Barium
Lutetium
Hafnium
Tantalum

What is radon good for?

Radon decays into radioactive polonium and alpha particles. This emitted radiation made radon useful in cancer therapy. Radon was used in some hospitals to treat tumours by sealing the gas in minute tubes, and implanting these into the tumour, treating the disease in situ.

What is element 56 on the periodic table?

Element 56 of Periodic table is Barium with atomic number 56, atomic weight 137.327. Barium, symbol Ba, has a Body Centered Cubic structure and Silver color. Barium is a alkaline earth metal element.

What is the best element on periodic table?

Carbon. The Carbon atomic symbol is C.

  • Nitrogen. The Nitrogen atomic symbol is N.
  • Copper. Copper atomic symbol is Cu.
  • Silver. Silver atomic symbol is Ag which is derived from the Latin word “Argentum”.
  • Gold. Gold atomic symbol is Au which is derived from the Latin word “Aurum”.
  • Platinum.
  • Iron.
  • Magnesium.
  • Oxygen.
  • Uranium.

    • How do you find elements in the periodic table?

    Part 2 of 3: Studying the Elements Recognize the element’s 1 to 2-letter symbol. It most often appears in the center of the box in a large font. Look for the full name of the element, if it’s present. This is the name of the element that you will use when writing it out. Find the atomic number. Recognize the atomic number is the number of protons in an atom.

    What identifies an element on the periodic table?

    The periodic table contains an enormous amount of important information: Atomic number: The number of protons in an atom is referred to as the atomic number of that element. The number of protons defines what element it is and also determines the chemical behavior of the element.