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The early periods have less elements because they are filling up energy levels which hold only a few electrons. The later periods contain elements with electrons in levels with a greater capacity.
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Do some atoms have more or fewer protons than will other atoms of the same element?
No. The atomic number of an element is determined by its number of protons. If two atoms have different numbers of protons, they have different atomic numbers and are different elements.
Does atoms have mass?
Atoms are matter, and all matter has mass. In that light, any (and every) atom has mass. Different atoms of different elements have different masses, as you would expect. As atomic numbers increase, the Atomic Mass of an atom increases, but we also need to account for the different isotopes of different elements. Isotopes are different "configurations" of the same element where there are different numbers of neutrons in the nucleus. This gives rise to different masses for different elements, and also for different isotopes of the elements. There is more to this discussion, and there are other questions here that are already posted and answered. Some of them are linked below.
How are isotops different from regular elements?
Isotopes are atoms of the same element with different numbers of neutrons. Some elements have more than one isotope and some don't. The isotopes of an element are chemically identical, they just differ in mass. There is nothing special about any particular isotope, elements with them are just as 'regular' as the few which don't.
Your periods are from 9 days why?
some peoples periods last 2 days we are all different.
Why are some of the elements pulled out and shown below the others?
The actinides (mostly f-block elements) and lanthanides (rare earth elements) display properties of their own periods, although having proton counts within the periods 6 and 7. They are not assigned to sequential groups.
What is the purpose for Typeface in Excel?
You need some typeface to display text and numbers. You can choose different ones for different headings or numbers, whatever you choose.You need some typeface to display text and numbers. You can choose different ones for different headings or numbers, whatever you choose.You need some typeface to display text and numbers. You can choose different ones for different headings or numbers, whatever you choose.You need some typeface to display text and numbers. You can choose different ones for different headings or numbers, whatever you choose.You need some typeface to display text and numbers. You can choose different ones for different headings or numbers, whatever you choose.You need some typeface to display text and numbers. You can choose different ones for different headings or numbers, whatever you choose.You need some typeface to display text and numbers. You can choose different ones for different headings or numbers, whatever you choose.You need some typeface to display text and numbers. You can choose different ones for different headings or numbers, whatever you choose.You need some typeface to display text and numbers. You can choose different ones for different headings or numbers, whatever you choose.You need some typeface to display text and numbers. You can choose different ones for different headings or numbers, whatever you choose.You need some typeface to display text and numbers. You can choose different ones for different headings or numbers, whatever you choose.
What are the periods in Mendeleev's periodic table?
Because some of the elements were not yet discovered so he left them blank for other elements to be discovered. -bobby corner
The short periods contain some of the most common elements found in?
earths crust , oceans and atmosphere
How were some of the elements alike and different?
They are all Elements and They are diiferent substances
In a redox reaction the numbers of some of the elements changes from the reactants to the products?
In a redox reaction the OXIDATION numbers of some of the elements change from the reactants to the products. The numbers of atoms each element never changes in any chemical reaction.
What would change the number an atom into an atom of a different element?
A nuclear reaction of some sort ( not necessarily violent blast). there are various Isotopes of some elements- with differing atomic numbers.
What do you call atoms that have more than 1 type of atom?
Some elements have atoms with differing numbers of neutrons in their nuclei. These different types are called isotopes.
