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What number is iodine on the periodic table?
Atomic number 53, column 17, and period 5.
Are protons the number on top or the bottom?
For a given isotope of an element, the "top number" (e.g. 14C or carbon-14) is the atomic mass number, the total of neutrons and protons. The bottom number, if displayed, is the atomic number (e.g. 6C all isotopes of carbon have 6 protons). To find the number of neutrons, subtract the atomic number from the isotopes atomic mass number. Here, 14C will have 8 neutrons, and the result is that it is an unstable radioactive isotope. Many stable elements, however, have many more neutrons than protons.
The 127.6 at the bottom of Tellurium in the periodic table stands for?
the 127.6 stands for the relative atomic mass, which is the number of protons and neutrons in tellurium. the number down the bottom indicates the atomic number which for tellurium is 52 so that means there are 52 protons and 127.6 subtract 52 = 75.6 so there are 75.6 neutrons :)
Is the atomic number the top or bottom number?
Its the bottom number E.g. if there was a 35 at the top of.. > Cl and 17 at the bottom of.. > Cl Cl (Chlorine) would have the atomic number 17. This means it would also have 17 protons, 17 electrons and 18 neutrons. i.e 35-17 = 18 which is the number of neutrons :) Ahh the one time i listen in chemistry helps me, AND someone else!! Or atleast i hope i helped.
What does the atomic number indicate about an element?
The atomic number is the number of protons in the nucleus of one atom of the element.
What happens to the atomic size from the top to the bottom of the periodic table?
The atomic size increase from top to bottom of periodic table. As the number of shells increases from top to bottom, the atomic size increases.
What happens to the atomic size from the top of the periodic table to the bottom?
The atomic size increase from top to bottom of Periodic Table. As the number of shells increases from top to bottom, the atomic size increases.
What happens to the atomic number as you move down the alkal metal group?
The atomic number increases, because as you move from top to bottom, you are adding protons to the nucleus, and atomic number is the number of protons.
What is the atomic number and column of seaborgium?
The atomic number of seaborgium is 106, and it is found in column 6 of a wide form periodic table.
How does the atomic number change across a column of the periodic table?
Columns are vertical, so you are referencing a group of elements. The atomic number increases as you descend from top to bottom. Rows are horizontal, which references the periods. The atomic number increases as you go from right to left.
What is the atomic number for lodine?
It is number 53, and is in the Halogen column.
How many neutrons does uranium 239 have?
simple, the bottom number that is missing is the atomic number. Pu is plutonium which happens to have the atomic number of 94. subtract the top number (mass number) and the atomic number and you get the amount of nuetrons, so the answer is 145 neutrons. (its an isotope)
What is the difference between atomic mass unit and atomic mass?
Atomic mass unit is the number on the bottom of the Chemical. However, the atomic mass is the number on the top of the chemical minus the number on the bottom. b.t.w The no. of neutrons = top no. minus bottom no.
What happens to atomic radius as you move from bottom to top of the periodic table?
atomic radius decreases from bottom to top of the periodic table.
What does the atomic number on the periodic table tell?
The atomic number represents the number of protons. The atomic mass represents the number of protons + neutrons.
What does the periodic table list elements according to?
The periodic table lists elements according to their atomic number, which is the number of protons in the nucleus of an atom of that element. Elements are arranged in order of increasing atomic number from left to right and top to bottom.
Do you put the lower number on the bottom in column method?
You put the lower number at the bottom idiot you know nothing!
