Question

valence electron of rubidum,strontium,yttrium,zirconium​

Answer 1

Answer:

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Strontium holds 2 valence electrons hence its valency is 2.

zirconium has 4 valence electrons and is in group 4.

Yttrium commonly has an oxidation state of +3 since it gives three valence electrons.

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Answer 2

Answer:

1. The total number of electrons present in the valence shell of an atom is called valence electrons, and there is only one electron present in the valence shell of rubidium (5s 1). Thus, rubidium has only one valence electron.
2. A number of valence electrons in Strontium is 2. That is there are 2 e- (electrons) present in its outermost shell.
3. Yttrium commonly has an oxidation state of +3 since it gives three valence electrons.
4. The number of valence electrons of an element is always the same as the group number, so zirconium therefore has 4 valence electrons and is in group 4.

Explanation: