Identify the elements that have the following electron configurations:
1s²2s²2p⁶3s²3p¹ *

Which of these best describes the scientific process

Compare and contrast refraction of light and sound will give brainliest

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.