Using what you know about the periodic table, choose all of the correct answers.


Chlorine has the same number of valence electrons as bromine
Lithium, chromium, and oxygen are all considered metals.
Metals tend to form cations as they will give away electrons for stability.
Magnesium and calcium both have 2 valence electrons.
Nitrogen and carbon both form ions with a +3 charge.
All metals and nonmetals are gases at room temperature.

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Answer:

- Chlorine has the same number of valence electrons as bromine

- Metals tend to form cations as they will give away electrons for stability.

- Magnesium and calcium both have 2 valence electrons.

Based on the knowledge of the periodic table, the true statements from the  given statements are:

  • Chlorine has the same number of valence electrons as bromine
  • Metals tend to form cations as they will give away electrons for stability.
  • Magnesium and calcium both have 2 valence electrons.

What is the Periodic Table?

The Periodic table is a table that arranges elements into vertical columns called groups and horizontal rows called periods.

Elements in the same group have similar have same number of valence electrons, while elements in the same period have same number of valence shells.

Based on the knowledge of the periodic table, the true statements from the  given statements are:

  • Chlorine has the same number of valence electrons as bromine
  • Metals tend to form cations as they will give away electrons for stability.
  • Magnesium and calcium both have 2 valence electrons.

Learn more about the periodic table at: https://brainly.com/question/14514242

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