***INCORRECT RESPONSES (I.R.) ARE AS FOLLOWS*** I.R.#1 P: Mg D:S, P, He I.R.#2 P

Question

***INCORRECT RESPONSES (I.R.) ARE AS FOLLOWS***

I.R.#1 P: Mg D:S, P, He

I.R.#2 P. Mg p D. S, He

I.R.#3 P. S, Mg D: P, He

A Gouy balance is used to determine the magnetic susceptibility of a substance. A strong electromagnet is placed next to the sample, which is on a balance. If the sample is paramagnetic, the mass reading of the balance will increase when the field is switched on. Based on their electron configurations, predict whether these elements are paramagnetic or diamagnetic.

Gouy balance is used to determine the magnetic susceptibility of a substance. A strong electromagnet is placed next to the sample, which is on a balance. the sample is paramagnetic, the mass reading of the balance will increase when the field is switched on Based on their electron configurations, predict whether these elements are paramagnetic or diamagnetic. X Paramagnetic Dia Diamagnetic Mg He Gouy Balance Off On sample This animation is for interest only. It is not needed to answer the question.

Explanation / Answer

Electronic configurations,

He (Z=2) 1s2

Mg(Z=12) 1s2 2s2 2p6 3s2

P(Z=15) 1s2 2s2 2p6 3s2 3p3

S(Z=16) 1s2 2s2 2p6 3s2 3p4

Paramagnetic :

P, S

Diamagnetic:

He, Mg

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