The smallest unit of an element that has all of the properties of the element is alan

A. neutron.

B. molecule.

C. atom.

D. cell.

What is the SI base unit for length?

Explain how a rotating electric fan might be used to model the atom. explain how the rotating fan is unlike an atom.

Photoelectrons are removed with kinetic energy 1.864*10^-21 J, when photons of light with energy 4.23*10^-19 J fall on the metal. What is the minimum energy required per mole to remove an electron from potassium metal?

What is the angle between two of the nitrogen-hydrogen bonds in the ammonium (nh4) ion?

Calculate the standard free-energy change for the following reaction at 25 °C. Standard reduction potentials can be found here.

Convert: 65 kg to mg 65,000 mg O 65,000,000 mg O 65 mg

F. How many representative particles are in 6.78 moles of sucrose C12H22011?

The ratio of the lengths of two sides of a right triangle forms a

What element is used in making thermometers

How many dots are shown in the electron dot diagram for calcium, in group II and period 4 with 20 protons and 20 electrons? a. four c. eight b. two d. twenty