Multiple Choice
Which one of the following is not one of the postulates of Dalton's atomic theory?
A) Atoms are composed of protons, neutrons, and electrons.
B) All atoms of a given element are identical; the atoms of different elements are different and have different properties.
C) Atoms of an element are not changed into different types of atoms by chemical reactions: atoms are neither created nor destroyed in chemical reactions.
D) Compounds are formed when atoms of more than one element combine; a given compound always has the same relative number and kind of atoms.
E) Each element is composed of extremely small particles called atoms.
Correct Answer:

Verified
Correct Answer:
Verified
Q136: _-rays consist of fast-moving electrons.<br>A)Alpha<br>B)Beta<br>C)Gamma<br>D)X<br>E)none of the
Q137: If an atom gains 3 electrons to
Q138: The element X has three naturally occurring
Q139: The element X has three naturally occurring
Q140: The name of the ionic compound NaBrO<sub>4</sub>
Q142: The correct formula of iron (III)bromide is
Q143: Iodine forms an ion with a charge
Q144: The molecular formula of a compound is
Q145: Which compounds do not have the same
Q146: Which pair of elements is most apt