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Author Question: Which of the following is a characteristic of the modern periodic table? (Read 25 times)

Alainaaa8

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on: Jun 7, 2021

Question 1

What elements are in hydroxyapatite, Ca5(PO4)3OH, a major compound in human bones and teeth?
◦ carbon, potassium, oxygen, hydrogen
◦ calcium, phosphorous, oxygen, helium
◦ calcium, phosphorous, oxygen, hydrogen
◦ carbon, phosphorous, oxygen, helium
◦ carbon, potassium, oxygen, helium

Question 2

Which of the following is a characteristic of the modern periodic table?
◦ The elements in each group have similar chemical properties.
◦ The B groups contain the representative elements.
◦ The A groups contain the transition elements.
◦ A group is a horizontal row on the periodic table.
◦ A period is a column on the periodic table.
Chemistry: An Introduction to General, Organic, and Biological Chemistry ¦ Timberlake ¦ 13th Edition
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Marked as best answer by Alainaaa8 on Jun 7, 2021

nguyenhoanhat

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Reply #1 on: Jun 7, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Alainaaa8

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Reply 2 on: Jun 7, 2021
:D TYSM

xiaomengxian

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Reply 3 on: Yesterday
Wow, this really help

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