Modern periodic law — task. Science TNSB Mentoring, Class 10.

Select the right answers:

1. The atomic mass of argon is __________.

\(39.55\) AMU
\(37.95\) AMU
\(39.95\) AMU
\(38.95\) AMU

2. The atomic mass of potassium is __________.

\(38.10\) AMU
\(39.10\) AMU
\(39.30\) AMU
\(39.20\) AMU

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