What value is equivalent to 7.2 kilograms

Lewis structure and molecular geometry for nh2cl

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

The element that has the greatest electronegativity is