Published on April 8, 2011
Atomic structure<br />Notes<br />PURE SUBSTANCE: FIXED melting and boiling points<br />p + np X<br />ISOTOPES: Same number of PROTONS, different number of NEUTRONS<br />Workout questions<br />Which of the following gases would diffuse most rapidly?NH3H2OSO2N2Liquid A freezes at a fixed temperature of -200℃. Which other property of A is needed to determine if it is a pure substance?It boils at 200℃It is a silvery liquid at room temperature and pressureIt is insoluble in waterIt does not react when heatedWhich ion has the most shells that contain electrons?Cl +Mg 2+Al 3+Na +Which pair of substances are isotopes?H2O (l) and H2O (g)Zn metal and Zn2+ ionChlorine and bromine1735 Cl and 1737 ClX is a non-metallic element. Which of the following could be the electronic configuration of X?18.104.22.168.22.214.171.124.7Which of the following is a compoundAirCopperBrassWater Q forms a negative ion with the configuration of 2.8. Identify Q.MagnesiumOxygenFluorineSodium What isThe electronic configuration of an oxygen ion?________________________________________________________________________The formula of a positive ion of the same configuration________________________________________________________________________An atom of the same configuration?________________________________________________________________________Would you expect this atom to be more or less reactive than oxygen? Explain.________________________________________________________________________Given the following information, identifyNo. of protonsAtomic massNo. of electronsA153114B153115C153116D173517E173717A pair of isotopes________________________________________________________________________An atom and its positive ion________________________________________________________________________
Which of the following gases would diffuse most rapidly?
Liquid A freezes at a fixed temperature of -200℃. Which other property of A is needed to determine if it is a pure substance?
It boils at 200℃
It is a silvery liquid at room temperature and pressure
It is insoluble in water
It does not react when heated
Which ion has the most shells that contain electrons?
Which pair of substances are isotopes?
H2O (l) and H2O (g)
Zn metal and Zn2+ ion
Chlorine and bromine
1735 Cl and 1737 Cl
X is a non-metallic element. Which of the following could be the electronic configuration of X?
Which of the following is a compound
Q forms a negative ion with the configuration of 2.8. Identify Q.
The electronic configuration of an oxygen ion?
The formula of a positive ion of the same configuration
An atom of the same configuration?
Would you expect this atom to be more or less reactive than oxygen? Explain.
Given the following information, identify
No. of protonsAtomic massNo. of electronsA153114B153115C153116D173517E173717
A pair of isotopes
An atom and its positive ion
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