The characteristics of elements $\mathrm{X}$, $\mathrm{Y}$ and Z with atomic numbers, respectively, 33, 53, and 83 are:

(B) X is a metalloid, Y is a non-metal and Z is a metal.

(C) X and Y are metalloids and Z is a metal.

(D) X and Z are non- metals and Y is a metalloid.

JEE Main · 2021 · 16 Mar 2021 · Shift 2 · Classification of Elements and Periodicity

The characteristics of elements

X

Y

and Z with atomic numbers, respectively, 33, 53, and 83 are:

(A) $X, Y$ and $Z$ are metals.
(B)X is a metalloid, Y is a non-metal and Z is a metal.✓ Correct
(C)X and Y are metalloids and Z is a metal.
(D)X and Z are non- metals and Y is a metalloid.

Answer: (B)

Solution

Atomic number 33 is arsenic, 53 is iodine and 83 is bismuth. Arsenic lies on the diagonal border between metals and non-metals in group 15 and behaves as a metalloid, with a semiconducting grey allotrope and both acidic and weakly basic oxides. Iodine is a group 17 element whose molecular solid is a typical non-metal. Bismuth is the heaviest member of group 15 and metallic character grows down a group, so bismuth is a metal. Arsenic is a metalloid, iodine is a non-metal and bismuth is a metal.

JEE Main · 2021 · 16 Mar 2021 · Shift 2 · Single correct option

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JEE Main · 2021 · 16 Mar 2021 · Shift 2 · Classification of Elements and Periodicity

Solution

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