Oxygen, O, (number 8), sulfur, S, (number 16), and selenium, Se, (number 34 ) have such similar chemical properties because
A) their outermost shells contain the same number of electrons.
B) because they are all located close to one another in the periodic table.
C) they all have the same number of occupied shells.
D) These elements can't have similar chemical properties because they are in different periods of the periodic table.
A
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How come an animal's carbon-14 levels do not start to decrease until it dies?
A. because it constantly replenishes its carbon-14 supply by eating plants with carbon-14 in them B. because it constantly replenishes its carbon-14 supply by breathing air with carbon-14 in it C. carbon-14 only starts to decay after the animal dies D. The carbon-14 levels do not decrease because the carbon-13 in its skin protects it from cosmic rays. E. because it is constantly being bombarded with cosmic rays
Yugoslavia and its former republics have been a major area of tension and warfare in the 1990s. First discuss the historical, ethnic, linguistic, and religious background of Yugoslavia, and then examine the conflicts of the 1990s, including the reasons for their occurrence and what has been done to settle them.
What will be an ideal response?
Evaluate how ethnic clustering could prevent the integration of diverse ethnic groups in the United States and Canada
What will be an ideal response?
Turbulent wind flow that blows over a barren surface can pick up sediment by the process known as ____________________
Fill in the blank(s) with correct word