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Nominally 180° longitude, although it does zig and zag from that line in several places.
International Date Line; however, it does zig-zag around some political boundaries.
nothing
There are special scissors called 'pinking shears' that cut with a zig-zag line.
Generally, the elements to the right of the zig zag line on the periodic table are non-metals, elements to the left of the zig zag line on the periodic table are metals, and elements on the zig zag line are metalloids with the exception of aluminum, which is a metal.
Generally, the elements to the right of the zig zag line on the Periodic Table are non-metals, elements to the left of the zig zag line on the periodic table are metals, and elements on the zig zag line are metalloids with the exception of aluminum, which is a metal.
hydrogen
in the zig zag line
The different type of line designs are zig zag, parallel, dotted, dashed, perpendicular, curved, straight and wavy. The most used line designs are zig zag, dotted and straight.
The zig zag lie comprises of metalloids. They separate transition elements and non-metals.
nonmetals
no, they are the semimetals/metalloids.