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Q: 1. What are transitional elements ?
2. Why is Cu (Copper) a transitional element ?
3. Why does s-block elements generally show flame test ?
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transitional element - The transition elements are those elements that have a partially filled d or f subshell in any common oxidation state. The word transition most commonly used for the d-block transition elements.
Cu is a transition element because the Cu²+ ion has an incomplete d level.Cu has d 10 configuration in ground state but in its most common oxidation state means Cu²+it has d 9 configuration Hence it is a d block element and a transition element.
s block element generally show flame test because of more electropositiveness. they can release electrons more easily. So in such circumstances e – may be excited easily. After these electrons get excited, they soon lose energy and return to their ground state.
Cu is a transition element because the Cu²+ ion has an incomplete d level.Cu has d 10 configuration in ground state but in its most common oxidation state means Cu²+it has d 9 configuration Hence it is a d block element and a transition element.
s block element generally show flame test because of more electropositiveness. they can release electrons more easily. So in such circumstances e – may be excited easily. After these electrons get excited, they soon lose energy and return to their ground state.
Anny121:
thanks !
can u pls tell the meaning of electropositiveness ?
actually electropositive is the right word but in colloquially ,sometimes , just as we use hindi words and do their Hindiization even if they do not have perfect meaning but give perfect sense. This is called hindikaran in hindi. in the same way i wrote that word on the basis of sense even if it does not have a significant meaning. in hindi we can understand it as a vidyut dhanatmakta( विद्युत धनात्मकता ). This is only for understanding not for elucidating the real meaning.
well explained ! kudos to u !
even if i wrote electropositiveness but you will surely understand the exact meaning what the sentence wanted to elaborate.
thanks ... I got it dear ! good efforts ^_^
Thanks a lot for kudos.
U worth it ^-^
This is your greatness that you understand me worthy of this
Answered by
4
The elements in the atoms of which last two shells are incompletely filled are called transitional elements. They are placed in S and P blocks and are also called as D block elements. These are solid metals at room temperature.
Copper (cu) have last two shells incompletely filled and also it is solid metal at room temperature hence it is placed in transitional elements. S block elements are mostly highly reactive. Hence they always pass flame test
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