Asap energy levels in an atom are shown by the number n. how many electrons can fit in the energy level with n = 5?

Zinc + lead(ii) nitrate yield zinc nitrate + leadwhat's the chemical equation for this?

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line