element X belongs to Group 17 and the third period of the periodic table. [3] (a) Write the electronic configuration of the element. What is its valency? (b) Predict its nature, whether it is a metal or a non-metal. (c) Give the formula of the compound formed when it combines with an element Y having a valency three.
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Verified answer
Answer:
1) Period = 3
So,
No. of shells = 3
2) GROUP = 17
Valency = -1
=> Bromine
[tex] \red{a)2 \: . \: 8 \:. \: 7}[/tex]
[tex] \green{b)non - metal \: as \: it \: belongs \: to \: group17}[/tex]
[tex] \orange{c)}[/tex]
Y Br
3. 1
=> YBr3
Plz thanks