Which of the following lists contain only trace elements?
A) sulfur, chlorine, oxygen
B) selenium, hydrogen, calcium
C) boron, oxygen, carbon
D) silicon, fluorine, tin
E) cobalt, calcium, sodium
Correct Answer:
Verified
Q3: The smallest stable units of matter are
A)
Q5: Isotopes of an element differ in the
Q7: By weight, which element is the second
Q14: Which element commonly has only a proton
Q14: The nucleus of an atom consists of
A)
Q21: In a molecule of oxygen gas, two
Q22: Magnesium atoms have two electrons in the
Q32: The chemical behavior of an atom is
Q37: In an aqueous solution,cations are attracted toward
A)water.
B)salt.
C)buffers.
D)anions.
E)hydrogen
Q53: The reaction N₂ + 3 H₂ →
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