Which of the following properties of silicon (Si) is the most important in determining its physical and chemical properties? Select one: O Silicon is a brittle solid at room temperature. O Silicon has a low reactivity O Silicon has four valence electrons O Silicon is a metalloid

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

Draw the lewis structure for the trisulfur s3 molecule. be sure to include all resonance structures that satisfy the octet rule.

If a particle has z = 25 and 23 electrons, what is its charge?