a. Which of the following elements would be expected to have the largest position in the Periodic Table?

o Bromine o Cobalt o Gallium o Rubidium o Scandium

b. Given the following electron Configuration 4d, what element has this as the distinguishing electron?

o Kryton o Arsenic o Palladium o Nickel o Iron

c. How many electrons does the valence shell of the mercury atom contain?

o 2 o 5 o 6 o 8

Solutions

Expert Solution

a) Rubidium

The modern periodic table has an arrangement of elements according to their atomic numbers. The element with the highest atomic number oocupies the largest position. So here rubidium has the highest atomic number amongst all other elements i.e. 37, so it occupies the largest position in the periodic table.

b) Palladium

The electron configuration of the element palladium is : [Kr] 4d¹⁰. So this element has the electron configuration 4d as the distinguishing electron.

c) 2

The electron configuration of the element mercury is given as : [Xe] 4f¹⁴ 5d¹⁰ 6s²

So the valence shell of the element is 6th shell ,that has 2 electrons in it.

queen_honey_blossom answered 1 year ago

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