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They represent the valance electrons in each element.

Roman numerals do no represent the valence electrons but it is the group number given by mendeleef.

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11y ago
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electrons A+

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Q: The Roman numeral at the top of a column on the periodic table indicates the number of?
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Related questions

The Roman numeral at the top of a column on the periodic table indicates the number of what in the outer shell?

electrons


The Roman numeral at the top of a column on the periodic table indicates the number of in the outer shell.?

valence electrons


What does the period number on periodic table mean?

The group number is an identifier used to describe the column of the standard Periodic Table in which the element appears.


Which column on the periodic table has the same number of valence electrons?

For example the column 17 - halogens.


How many valence electrons are in the outer shell of Hafnium with an atomic number of 72?

Hafnium may be found in column 4 of a wide form periodic table. This indicates that it has four valence electrons.


What column number on the periodic table are elements called alkali metals?

This is the group 1.


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.


When moving down a group in the periodic table what does the number of valence electrons do?

When moving down a column in the periodic table, except for the first period of column 18, the number of valence electrons remains unchanged.


What information in the periodic table indicates the number of protons in an atoms?

the informatio


How are the number of neutron and electrons calculated?

By which column and geoup number it is in on the periodic table i learnt it in science


What number is iodine on the periodic table?

Atomic number 53, column 17, and period 5.


What do the numbers at the top of each column stand for in the Periodic Table?

the number of protons