The process of an atom releasing energy when it moves to a lower energy state is called

regression.

emission.

absorption.

translation.

What is the oxidation number of NaMnO4?

Particles are arranged in a crystal structure in a sample of (1) H2 (g) (3) Ar (g) (2) Br2 (l) (4) Ag (s)

Which refers to the sum of all the forces that act upon an object? absolute force Onet force positive force O balanced force Save and Exit Next Submit Mark this and return

An atom of lithium-7 has an equal number of (1) electrons and neutrons (2) electrons and protons (3) positrons and neutrons (4) positrons and protons

Above a pressure of 200 atmospheres and at a temperature of 100 degrees Celsius, water is in gas phase. True or false?

Least reactive element of period 3

A chemical formula shows the kind and number of Atoms that form a what? compound, mixture, solution, or suspension

What gas was used as a deadly posiosn in world war 1?

Four moles of hydrogen chloride (HCl) gas react with one mole of oxygen (O2) gas to produce two moles of chlorine gas (Cl2) and two moles of water gas (H2O).

what noble gas electron configuration is achieved by the bromine atoms in a molecule of BR2, a diatomic element?