Which of th following statements explains the cause of lanthanide contraction?

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Write a brief passage describing a neutral atom of nitrogen-14 (n-14). describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located, and how the terms atomic number, mass number, and atomic mass are related to the particles. use the periodic table to you. 14 protons and eletrons since its a neutral atom

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions