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Which of the following general trends are true for the atomic mass of elements in the periodic table? 1. The atomic mass is usually a decimal number. II. The atomic mass is always smaller than the atomic
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Which of the following general trends are true for the atomic mass of elements in the periodic table?

1. The atomic mass is usually a decimal number.
II. The atomic mass is always smaller than the atomic number.
III. The atomic mass increases from top to bottom down a group.
IV. The atomic mass increases from left to right across a period.

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User Discodowney
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Answer:

D. the atomic mass increases from left to right

Step-by-step explanation:

User Templatetypedef
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