State whether the following statements are true or false: In the Modern Periodic Table,a zig-zag line separates metals from non-metals. The borderline elements—boron,silicon,germanium,arsenic,antimony,tellurium,and polonium—are intermediate in properties and are called metalloids or semimetals.

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(TRUE) The statement is True. In the Modern Periodic Table,a zig-zag line (often referred to as the staircase line) effectively separates the metallic elements on the left from the non-metallic elements on the right. The elements lying along this boundary,such as boron $(B)$,silicon $(Si)$,germanium $(Ge)$,arsenic $(As)$,antimony $(Sb)$,tellurium $(Te)$,and polonium $(Po)$,exhibit properties that are intermediate between those of metals and non-metals. These elements are collectively known as metalloids or semimetals.

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Similar Questions

Atomic radii of the elements of the second period are given below :
Period $II$ elements $B$ $Be$ $O$ $N$ $Li$ $C$
Atomic radius $(pm)$ $88$ $111$ $66$ $74$ $152$ $77$

$(i)$ Arrange them in decreasing order of their atomic radii.
$(ii)$ Are the elements now arranged in the pattern of a period in the Periodic Table?
$(iii)$ Which elements have the largest and the smallest atoms?
$(iv)$ How does the atomic radius change as you go from left to right in a period?

Which of the following is the outermost shell for elements of period $2$?

It was assumed by Newlands that only :

Which of the following elements would lose an electron easily?

Why does atomic size decrease as we move from left to right along a period in the periodic table?

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