molar mass based off periodic table java

Molar mass based off periodic table java series#

Nuclear weapons tests have released at least six actinides heavier than plutonium into the environment analysis of debris from a 1952 hydrogen bomb explosion showed the presence of americium, curium, berkelium, californium, einsteinium and fermium. The other actinides are purely synthetic elements. The radioactive decay of uranium produces transient amounts of actinium and protactinium, and atoms of neptunium and plutonium are occasionally produced from transmutation reactions in uranium ores. Of the actinides, primordial thorium and uranium occur naturally in substantial quantities. Uranium and thorium also have diverse current or historical uses, and americium is used in the ionization chambers of most modern smoke detectors. These have been used in nuclear reactors, and uranium and plutonium are critical elements of nuclear weapons. While actinium and the late actinides (from curium onwards) behave similarly to the lanthanides, the elements thorium, protactinium, and uranium are much more similar to transition metals in their chemistry, with neptunium, plutonium, and americium occupying an intermediate position.Īll actinides are radioactive and release energy upon radioactive decay naturally occurring uranium and thorium, and synthetically produced plutonium are the most abundant actinides on Earth. They all have very large atomic and ionic radii and exhibit an unusually large range of physical properties. In comparison with the lanthanides, also mostly f-block elements, the actinides show much more variable valence.

Molar mass based off periodic table java series#

The series mostly corresponds to the filling of the 5f electron shell, although as isolated atoms in the ground state many have anomalous configurations involving the filling of the 6d shell due to interelectronic repulsion. Lawrencium is sometimes considered one as well, despite being a d-block element and a transition metal.

humanoid or android), it has been argued for semantic reasons that actinium cannot logically be an actinoid, but IUPAC acknowledges its inclusion based on common usage. Since actinoid literally means actinium-like (cf. However, owing to widespread current use, actinide is still allowed. The 1985 IUPAC Red Book recommends that actinoid be used rather than actinide, since the suffix -ide normally indicates a negative ion. The informal chemical symbol An is used in general discussions of actinide chemistry to refer to any actinide. (Number 103, lawrencium, is sometimes also included despite being part of the 6d transition series.) The actinide series derives its name from the first element in the series, actinium. The conversion factors are 1 mole Cl2 over 70.90 grams Cl2, and 6.022 times 10^23 Cl2 molecules over 1 mole Cl2.The actinide ( / ˈ æ k t ɪ n aɪ d/) or actinoid ( / ˈ æ k t ɪ n ɔɪ d/) series encompasses at least the 14 metallic chemical elements in the 5f series, with atomic numbers from 89 to 102, actinium through nobelium. Prepare a concept map and use the proper conversion factor. Identify the 'given' information and what the problem is asking you to 'find.'ġ mol Cl 2 = 70.90 g Cl 2, 1mol Cl 2 = 6.022 x 10 23 Cl 2 molecules