Chemistry · Periodic Classification of Elements
What is the trend for the atomic number while moving from left to right across a period in the modern periodic table?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The atomic number increases by two units.
- 2The atomic number decreases by one unit.
- 3The atomic number remains constant.
- 4The atomic number increases by one unit.✓
Correct answer
The atomic number increases by one unit.
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