A single atom of an element has 21 neurons 20 electrons and 20 protons which element is it?

What is light? A wave of vibrating electric and magnetic energy A wave that travels by compressions A wave that travels by rarefactions A state of matter

Match the effects on the concentration of SO3 gas when the following changes occur after initial equilibrium has been established in this system (N. C. = no change). 2SO2 (g) + O2 (g) 2SO3 (g) + 46.

Nitrogen (N) needs three more electrons to fill its outermost energy level. What is the number of electrons that Nitrogen (N) has in its outermost energy level before it forms a bond?

Activity C: Hydrolysis of Carbohydrates As discussed earlier, disaccharides are composed of two monosaccharides linked together. Polysaccharides are long chains of monosaccharides.

What is the active ingredient in all hydroxide relaxers?

Identify the precipitate (if any) that forms when KOH and Cu (NO3) 2 are mixed

An atom has a mass number of 27 and 14 neutrons. what is the atomic number of this atom?

The two forms of oxygen, O2 (g) and O3 (g), have (1) different molecular structures and identical properties (2) different molecular structures and different properties (3) identical molecular structures and identical properties (4) identical

What is the difference between a distraction and a reaction

if carbon which has an electrongavity of 2.5 bonds with hydrogen, which has an electrongavity of 2.1, the bond between the two atoms will be classified as a (n) covalent bond