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Elements on the Periodic Table are arranged by atomic number. This refers to the number of protons in the nucleus of that atom. Generally, atoms with higher atomic numbers will have a higher mass (due to more protons); however, the number of neutrons in the nucleus (isotopes of each element) will also affect the mass. An element with a lower atomic number but extra neutrons could have a higher Atomic Mass than an element with a higher atomic number. The atomic mass listed on the periodic table is an average of the naturally occurring distribution of isotopes of that element. For example, Cobalt (element #27) has an atomic mass of 58.9332 amu, whereas Nickle (element #28) actually has a lower atomic mass of 58.6934 amu.

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14y ago
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14y ago

They are arranged by increasing atomic number. Generally, there is also an increase in mass along groups and periods.

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9y ago

increasing atomic number (Z) as we look from left to right, the lighter metals appear on the left

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false

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Yes it is

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Q: Is element in the periodic table are arranged from left to right in rows by increasing atomic number?
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Related questions

How is the periodic table used to arrange the elements?

The periodic table used to be arranged by increasing atomic mass. Now, it is arranged by increasing atomic number (number of protons in an atom of element).


How are element arranged on a periodic table?

The elements are arranged in the increasing order of their atomic number and repeating properties.


How do you tell the atomic number of an atom?

The atomic number of each element is on the periodic table. The elements are arranged on the periodic table in order of increasing atomic number.


How are elements arranged in the current periodic table?

Elements are arranged in order of increasing atomic number. The atomic number is the number found at the top of each box on the Periodic Table. The atomic number is the number of protons in the nucleus of each atom of each element.


When the elements are arranged by increasing atomic number there will be a periodic repetition of their prop?

The periodic law states that when the elements are arranged by increasing atomic number, there will be periodic repetition.


What is an atomic number and what is its relationship with the periodic table?

the atomic number is the number of protons in a certain element. elements are arranged on the periodic table by atomic number in increasing order


In the periodic table the elements are arranged in order of increasing?

In modern periodic table, elements are listed by increasing atomic number.


What is periodic table of element?

Periodic table contains elements arranged in rows and columns. It is done according to increasing atomic number.


How did Mendeleev arrange the known element in his periodic table?

He arranged the elements in the increasing order of their atomic masses and repeating periodic properties.


Why is hydrogen the first element?

As the periodic table is arranged in order of increasing atomic number hydrogen is the first element in the periodic table as it has only one electron.


What is the modern periodic table is now arranged according to?

Now modern periodic table is arranged in order of increasing atomic number. The properties are found to be periodic when arranged in this pattern.


Which element's atoms contains twenty nine protons?

It is element 29 on the periodic table. The elements in the periodic table are arranged according to increasing atomic number. The atomic number is the number of protons in the element's atoms.