A model of a beryllium atom is shown below. What types of particles are found in the cloud surrounding the atom’s nucleus?

Neutral particles and positively charged particles

n has four pairs of electrons in the valence shell, electrons repel one another ,n has 7 protons in its nucleus, and since n has 7 protons, it must fill the second shell, giving it 4 pairs of electrons. the electrons form 3 bonds and 1 lone pair of electrons. each pair of electrons repels the other pairs, so they are equally far apart.

so all of the above

the correct answer is answer a. a mixture

no other options make sense

hope this

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  - sprinkles