Select the two statements that are true: a) The atom size decreases from left to

Question

Select the two statements that are true:

a) The atom size decreases from left to right in a period of the periodic table

b) Bohr was correct to assume a fixed radius for each orbital

c) Magnetic properties result from the difference is charge between the nucleus and the electrons

d) The possible values of the spin quantum number depend on the value of the principle quantum number

e) Iodine has higher electronegativity than phosphorus

f) The size and the energy of a valence orbital depends mostly on the angular momentum quantum number l

Explanation / Answer

Atom size decrease from left to right in period of Periodic Table. True

more electrons are being added to atoms, still size is decreasing as electrons are at similar distances to the nucleus; and the increasing nuclear charge pulls the electron clouds inwards, making the atomic radii smaller.

No bohr was not correct in saying that the radius of each orbital is fixed

The possible values of spin quantum number depend on the azimuthal quantum number

Iodine has higher electronegativity than phosphorous True

So (a) and (e) are two statements which are true

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