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What is the number above the elements symbol?
The number above an element's symbol in the periodic table represents its atomic number, which indicates the number of protons in the nucleus of an atom of that element. Atomic number determines the element's unique identity and its placement in the periodic table.
The mass number of an element is the number of?
Mass number is the atomic mass of a particular isotope (apex chem 5.3)
Why isn't mass number listed with each element on the periodic table?
the periodic table isn't aranged by mass because itd be much more complicated to make sense out of it and itd be inconsistent, uranium is the heaviest element but its the 12th element acording to its atomic number, also all of the gases and liquids would be all over the periodic table
What are four things you can learn about an element by looking at its box on the periodic table?
protons,neutrons,electrons, and the element name
What element has a relative atomic mass of 15.5?
Relative atomic mass, also called atomic weight, is listed on the periodic table for each element. There is no element listed on the periodic table with a relative atomic mass of 15.5.
Is the atomic number of each element included in the periodic table?
YES!!! The atomic No. is the postition of the element in the periodic table. It also indicates the number of protons in the element and electrons in the neutral element. The Atomic Mass is also included in the periodic table. The Atomic Mass is the sum of all the protons and neutrons of an element in the periodic table. Here are some examples. Hydrogen ; [1/1]H The first element in the table Carbon ; [12/6]C The sixth element in the periodic table Oxygen ; [16/8]O The eighth element in the periodic table et.seq., The first number given is the Atomic Mass and the second number is the Atomic Number.
What does the periodic table describe about an element?
Periodic table describes the symbol, atomic number, mass number of different elements in general.
How can you find the mass number of an element?
look on the periodic table of the elements
How do you find mass Numbers of an element?
Mass number is the number underneath the elements letter on the Periodic Table.
What is a number in parenthesis on a periodic table?
The number in parenthesis on the periodic table represents the atomic mass of an element. It is the weighted average mass of the isotopes of that element, taking into account the abundance of each isotope.
Where is the mass number located on the periodic table?
The mass number is located at the top of each element's square on the periodic table. It represents the total number of protons and neutrons in the nucleus of an atom.
What do the numbers on mendeleev's periodic table represent?
The numbers on Mendeleev's periodic table represent the atomic number of each element, which is the number of protons in the nucleus of an atom. This number determines the element's identity and its placement in the periodic table.
How do you find the number of neutrons in a element using only mass and the element name?
To find the number of neutrons in an element, subtract the atomic number (number of protons) from the atomic mass number (rounded mass of the element). The atomic number can be determined from the element's position on the periodic table.
How do you work out the mass number from the periodic table?
The mass number of an element is the total number of protons and neutrons in its nucleus. To find the mass number on the periodic table, locate the element and round the atomic mass to the nearest whole number, which is the total number of protons and neutrons.
Was the first element on the periodic table of elements carbon?
NO!!! Hydrogen (H) is the first element on the Periodic Table. Reason Atomic No. = 1 Atomic mass( of protium) = 1 Carbon lies 6th position. Atomic No. = 6 Atomic mass = 12
Why does the mass number not appear on the periodic table?
Mass number is a property specific to a particular isotope or nuclide of an element, while the usual periodic table include average properties for all the stable, naturally occurring isotopes of each element.
The number shown on the top part of each of the element squares in a periodic table is the?
This depends on the periodic table but it is either the atomic number (the number of protons) or the atomic mass (the number of protons and neutrons). The integer number will be the atomic number and the larger number will be the atomic mass. The exception is hydrogen which has an atomic number of 1 and an atomic mass of 1 (very close to it).
