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sweet-ann [11.9K]
2 years ago
11

Which element does not have similar chemical characteristics as phosphorus (P)?

Chemistry
1 answer:
Trava [24]2 years ago
3 0
Generally (but far from universally), the elements within a group have similar characteristics. Antimony, nitrogen, and arsenic are all part of the same group as phosphorous (the pnictogens, or group 5A). Oxygen is not in this group, but rather in an adjacent group (the chalcogens, or group 6A). Thus, the answer here should be oxygen.

That said, there can be very significant differences in characteristics among the elements within a group, and that is certainly the case here. For example, free nitrogen exists predominantly as a molecular gas (N₂) and makes up about 78% of the atmosphere we breathe. Elemental arsenic (As), while in the same group as nitrogen, is naturally found in the solid state and is poisonous to humans (arsenic is sometimes included among the toxic heavy metals, although it’s technically a metalloid).
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Weigh 4.5 grams of sodium hydroxide and add it to the dry volumetric flask of 450 mL followed by small amount of water to dissolve all the NaOH .After this add the water upto tye mark of 450 mL.

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Molarity=\frac{\text{Mass of compound}}{\text{Molar mas of compound}\times Volume (L)}

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Volume of the NaOH solution =  450 mL =- 0.450 L ( 1 ml = 0.450 L)

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x = 4.5 g

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