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How many valence electrons are in beryllium?

Understand the Problem

The question is asking for the number of valence electrons in beryllium (Be). Valence electrons are the electrons in the outermost shell of an atom, and for beryllium, which is in group 2 of the periodic table, the answer can be determined based on its electron configuration.

Answer

2 valence electrons

The final answer is that Beryllium has 2 valence electrons.

Answer for screen readers

The final answer is that Beryllium has 2 valence electrons.

More Information

Beryllium has an atomic number of 4 and its electron configuration is 1s² 2s², indicating it has 2 valence electrons in the 2s subshell.

Tips

A common mistake is thinking valence electrons are always in the outermost shell irrespective of their energy levels; always check the electron configuration.

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