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The metalloids are those elements that border the step structure in the Periodic Table. Depending on the source, they include Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium, Polonium and Astatine.

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8y ago
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11y ago

There is a zigzag line (or staircase) running along group 13 to group 16 on the periodic table. The elements on the staircase are all metalloids.

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13y ago

The metalloid found in the 3rd period of the periodic table is Silicon(Si).

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9y ago

Boron- B

Atomic Number- 5

Atomic Mass- 10.811

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15y ago

Boron

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Q: What metalloid is found in period 3 of the periodic table?
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Related questions

What is boron's periodic table classification?

group 13, period 2 It is a metalloid


What is the metalloid in period 2 of the periodic table that is part of compuonds used as water softeners?

Boron


What are the elements on a periodic table?

Metalloid


What group is antimony in in the periodic table?

It's in the metalloid group. Antimony (Sb) is a chemical element, a metalloid placed in the group 15 and period 5 of the periodic table of Mendeleev.


Where in the periodic table is nitrogen found?

Nitrogen can be found in the 1st period of group 15 elements in the periodic table.


What period on the periodic table is neon found?

Period 2


Whats the Largest metolloid on periodic table?

Astatine is the largest metalloid on the periodic table. This metalloid has an atomic number of 85. Its molar mass is 210 gram per mol.


Where is the period number found on the periodic chart of the elemnts?

Usually at the top ... and classically written in Roman numerals.Yes, there are numbers at the top of a periodic table, although they are for the groups/families on the periodic table. Usually the period numbers are found to the left of the periodic table.


What period was technetium found in?

Technetium is in the period 5 of the periodic table.


Is there an element on the periodic table that is As?

Arsenic is a metalloid with the atomic symbol "As"


Is there an element on the periodic table that is?

Arsenic is a metalloid with the atomic symbol "As"


Which metalloid is in the fourth period and in the group as carbon?

In the Periodic Table, a group is a column of elements and a period is a row. The element in the 14th column and fourth row is germanium.