Which among the following metals crystallise as a simple cube ?A. Polo – InterviewSolution

InterviewSolution

1.	Which among the following metals crystallise as a simple cube ?A. PoloniumB. IronC. CopperD. Gold
Answer» Correct Answer - A Polonium is a radiactive element having two metallic allotropic forms , `alpha-" form "andbeta-` form. Out of these two forms, `alpha` - Po form crystallises as simple cubic crystal. Copper and gold crystallises in face centred cubic crystal and iron crystallises in body centred cubic crystal and iron crystallises in body centred cubic crystal .

Discussion

No Comment Found

Related InterviewSolutions

With which halogen the reactions of alkanes are explosive ?A. FluorineB. ChlorineC. BromineD. Iodine
Excess of ammonia with sodium hypochlorite solution in the presense of gule or gelatin givesA. `NaBH_(2)`B. `NH_(2)NH_(2)`C. `N_(2)`D. `NH_(4)Cl`
Which of the following polymers is used to manufacture clothes for firefighters ?A. ThiokolB. KevlarC. NomexD. Dynel
What is the density of solution of sulphuric acid used as an electrolyte in lead accumulator ?A. `1.5gmL^(-1)`B. `1.2gmL^(-1)`C. `1.8gmL^(-1)`D. `2.0gmL^(-1)`
The most basic hydroxide from following isA. `Pr(OH)_(3)(Z=59)`B. `Sm(OH)_(3)(Z=62)`C. `Ho(OH)_(3)(Z=67)`D. `La(OH)_(3)(Z=57)`
Identify the oxidation states of titinium (Z=22) and copper (Z=29) in their colourless compounds.A. `Ti^(3+),Cu^(2+)`B. `Ti^(2+),Cu^(2+)`C. `Ti^(4+),Cu^(+)`D. `Ti^(4+),Cu^(2+)`
What is the catalyst used for oxidation of `SO_(2)` to `SO_(3)` in lead chamber process for manufacture of sulphuric acid ?A. Nitric oxideB. Nitrous oxideC. Potassium iodideD. Dilute HCl
In which substance does nitrogen exhibit the lowest oxidation state ?A. Nitrogen gasB. AmmoniaC. Nitrous oxideD. Nitric oxide
Which of the following compounds reacts immediately with Lucas reagent ?A. `CH_(3)CH_(2)OH`B. `CH_(3)CH_(2)CH_(2)OH`C. `CH_(3)-underset(OH)underset(|)(CH)-CH_(3)`D. `CH_(3)-underset(OH)underset(|)overset(CH_(3))overset(|)(C)-CH_(3)`
Which among the following metals crystallise as a simple cube ?A. PoloniumB. IronC. CopperD. Gold