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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.
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What happens to the atomic number from top to bottom in a column?
The atomic number increases from top to bottom in a column in the periodic table. Each element in the same column shares the same number of valence electrons, which determines its chemical properties. This pattern helps classify elements into groups with similar characteristics.
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.
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.
How does the atomic number change as you move left or right of the periodic table?
The atomic number increases by one as you move from right to left across the periodic table. The atomic number represents the number of protons in an atom's nucleus, which increases as you move towards the right due to the addition of more protons in the elements.
What is the top number in the saquare in the periodic table indicate?
The top number in a square in the periodic table indicates the atomic number of an element. The atomic number represents the number of protons in the nucleus of an atom, which determines the element's identity.
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 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 from top to bottom in a column?
The atomic number increases from top to bottom in a column in the periodic table. Each element in the same column shares the same number of valence electrons, which determines its chemical properties. This pattern helps classify elements into groups with similar characteristics.
Is the atomic mass on the bottom or top?
At the bottom, the atomic number is at the top.
How many neutrons are in alumnium?
14 - Subtract atomic mass(usually bottom #) from atomic number(usually top #).
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.
The stranded atomic notation for an atom that has an atomic number of 4 and 5 neutrons?
It would be 9 on top, 4 on bottom and then Be.
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.
How does atomic number change from top to bottom?
As you move from top to bottom within a group in the periodic table, the atomic number increases sequentially. This is because each element has a unique number of protons in its nucleus, which defines its atomic number. Consequently, as you go down a group, each subsequent element has one more proton than the element above it, leading to a higher atomic number. Additionally, this increase in atomic number is associated with an increase in electron shells, resulting in larger atomic size.
Why the relative atomic mass of an element in th periodic table in fractional form?
The top left number is the mass (neutrons&protons) and the bottom left number is the atomic number(protons)
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.
