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How many places on the periodic table are the elements not in order by increasing atomic mass?
Classical pairs ate tellurium-iodine, thorium-protactinium, uranium-neptunium; and also some transuranium elements.
Why are some elements reactive and some nonreactive - does it correlate with where they are on the table?
No it does not help with where the elements are located. Elements on the Periodic Table are organized by columns. If 2 elements are in the samecolumn they both have similar properties.
Are transition elements radioactive?
Some are, and some are not.
Why were some of the elements not predicted?
After Mendeleev all natural elements were predicted.
Are all substances elements?
All gases are made up of elements, but some are not pure elements. Some are compounds, which are not the same as elements. For example, CO2 is a compound and a gas, but not an element.
Which pairs show process that the reverse of one another?
some one answer it lol
Why did Dmitri mendeleev reverse the order of some elements in the periodic table?
He was bold enough to reverse the order of some pairs of elements and to predict that their atomic masses were incorrect. Some of these predictions were correct, but others were not, because we now know that the fundamental basis of the periodic table is atomic number rather than atomic mass.
Can atoms of some elements can share three pairs of electrons?
yeap!
What are some pairs of numbers such that the product of the 2 numbers is the reverse of the sum of the 2 numbers?
9-9
Is atom of some elements can share three pairs of electrons?
The elements carbon and nitrogen can share 3 pairs in a triple bond. Carbon in alkynes, e.g. ethyne (acetylene) and nitrogen in N2 There ar also some transition metal complexes where triple bonds are formed betwee two transition metal atoms.
Atoms of some elements can share three pairs of electrons. True or false?
True. Nitrogen can share three pairs of electrons and has a lone pair of electrons for a total of eight in it's valence shell
How many places on the periodic table are the elements not in order by increasing atomic mass?
Classical pairs ate tellurium-iodine, thorium-protactinium, uranium-neptunium; and also some transuranium elements.
Why do some symbols have one letter some have two letters and some have three letters?
Elements are give symbols consisting of letters, and these are related to the names of the elements (in some language at some date). There are 26 letters in many alphabets, but more than four times that number of elements. So it is necessary to use some mechanism to distinguish among elements with names that start with the same letter. Adding numbers is done to designate the number of atoms in a compound, the isotope, and so on. The best solutions is to use pairs of letters for most elements.
How many pairs of underwear should a guy own?
There is not a limit on how many pairs of underwear a guy should own. Some guys have only 7 pairs and some have 50.
Do conures come in pairs?
Some Conures when you buy them do come in pairs but others they come individually.
Do Nitro RC cars reverse?
yes it does, Not all of them do and some that do have very weak reverse. I run MGT trucks an they have reverse
How do you reverse the order of element on stack by using one additional stack and some additional non array variables?
You pop elements off of one stack and push them onto the other. This reverses the order of the elements. while ((element = pop(stack1)) != NULL) push(stack2, element);
