How do the number of valence electrons an element has change from column to column?

Two isotopes of the same element will always have the same number of -Protons -neutrons -electrons

Which substance is a physical reaction to copper Copper rusting or copper depending due to force

Sophie sees a truck loaded with animals while traveling from Texas to Louisiana. The animals were cramped unhygienic cages. Which veterinary personnel should she contact immediately? A) Shelter medicine veterinarian. B) Consulting veterinarian.

What happens in the artificial transmutation of an element? Included an example.

When 1.187 g of a metallic oxide is reduced with excess hydrogen 1.054 g of the metal is produced. what is the metallic oxide?

For the baeyer-villiger oxidation of cyclohexyl methyl ketone

What will happen if the density of an object is less than the density of water?

Which cannot be separated into simpler substances? compound element solution mixture

What jobs involve chesmistry

Think about a neutral magnesium atom. Then think of a magnesium ion with a 2+charge. How are these two alike? How are they different? Be sure to use the terms proton, neutron, and electron in your answer.