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anzhelika [568]
3 years ago
11

Which of the following elements is a transition metal? Select one: a. tin b. tellurium c. copper d. cesium

Chemistry
2 answers:
gayaneshka [121]3 years ago
7 0
Copper (Cu) is a transition metal.
zhenek [66]3 years ago
5 0

<u>Answer:</u> The correct answer is Option c.

<u>Explanation:</u>

Transition metals are defined as the metals in which last electron of the atom enters d-subshell. Elements belonging to Groups 3 to Group 12 are considered as transition metals.

For the given options:

<u>Option a:</u> Tin

The number of electrons of this element are 50.

Electronic configuration of this element = Sn:[Kr]5s^24d^{10}5p^2

As, last electron is entering the p-subshell, therefore it is considered as a p-block element.

<u>Option b:</u> Tellurium

The number of electrons of this element are 52.

Electronic configuration of this element = Te:[Kr]5s^24d^{10}5p^4

As, last electron is entering the p-subshell, therefore it is considered as a p-block element.

<u>Option c:</u> Copper

The number of electrons of this element are 29.

Electronic configuration of this element = Cu:[Ar]4s^13d^{10}

As, last electron is entering the d-subshell, therefore it is considered as a d-block element or transition element.

<u>Option d:</u> Cesium

The number of electrons of this element are 55.

Electronic configuration of this element = Cs:[Xe]6s^1

As, last electron is entering the s-subshell, therefore it is considered as a s-block element.

Hence, the correct answer is Option c.

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