An atom of element a has 49 protons. what would the element's atomic number be?

Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.

Which short-term environmental change is most likely to lead to ground shifting, landslides, and the collapse of buildings or roads? forest fires flooding earthquakes

Consider the equation s + o2 ? so2. what is the product? question 3 options: s so 2 s + so 2 o 2