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The number above the symbol is the atomic number, or the number of protons in the nucleus of one atom of the element. It is this number by which they organized the Periodic Table. If this number changes so does the identity of the element. In a balanced atom this number will also be the number of electrons in the electron cloud.
The number below is the Atomic Mass number, or the average number of particles (protons plus neutrons) in the nucleus. Since the number of neutrons can change this number must be given as an average so it may contain a decimal.
The numbers on the left of the periodic table are the period numbers. Periods are the horizontal rows in the periodic table. The period number is equal to the number or energy levels of an element.
The two numbers shown in the periodic table for each element are numbers of electrons in the outer shell as well as the group number
Those numbers indicate periods. There are 7 periods in periodic table.
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Where are hydrogen found on the periodic table?
Hydrogen is found at the very top left of the periodic table. It is the first element on the periodic table and it is shown with the atomic symbol H.
What does the numbers on the side of the periodic table represent?
The period to which the element belongs
How will the modern periodic table be disturbed if isotopes of an element are discovered now?
The modern periodic table would not be disturbed if isotopes of an element are discovered now. Isotopes of an element do not impact the fundamental organization of elements in the periodic table, which is based on increasing atomic number. Isotopes are variations of elements with the same number of protons but different numbers of neutrons.
Is carbon the first element on the periodic table of elements?
No, carbon is not the first element on the periodic table of elements. Hydrogen is the first element on the periodic table.
What element on the periodic table weighs 19.32?
No element has an atomic weight of 19.32 on the periodic table.
Where are hydrogen found on the periodic table?
Hydrogen is found at the very top left of the periodic table. It is the first element on the periodic table and it is shown with the atomic symbol H.
Is the atomic number the largest the two numbers shown in the periodic table?
The atomic number is the smaller of the two numbers shown in the periodic table. It represents the number of protons in the nucleus of an atom and determines the element's identity. The larger number, the atomic mass, is the sum of protons and neutrons in the nucleus.
What does the numbers on the side of the periodic table represent?
The period to which the element belongs
How will the modern periodic table be disturbed if isotopes of an element are discovered now?
The modern periodic table would not be disturbed if isotopes of an element are discovered now. Isotopes of an element do not impact the fundamental organization of elements in the periodic table, which is based on increasing atomic number. Isotopes are variations of elements with the same number of protons but different numbers of neutrons.
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.
What element numbers on the periodic table of the elements are man made?
95- 118
Which element family is usually shown separated frome the main part of the periodic table?
The lanthanide and actinide element families are typically shown below the main part of the periodic table to help conserve space. They are also known as the "f-block" elements.
What is the name of the element As in the periodic table?
The element abbreviated with As on the periodic table is Arsenic
The average atomic mass grams shown on the periodic table for each element is also the mass of?
one mole of atoms of the element
Is carbon the first element on the periodic table of elements?
No, carbon is not the first element on the periodic table of elements. Hydrogen is the first element on the periodic table.
What is a group in a periodic table.?
A group in Periodic Table is the column of element in periodic table
Is copper wiring a mixture compound or element?
Copper is on the Periodic Table, anything on the periodic table is an element so copper wire is made from an element.
