In which of the following sets is the symbol of the element, the number of protons, and the number of electrons given correctly?

F, 19 protons, 19 electrons

Cs, 55 protons, 132.9 electrons

Zn, 30 protons, 60 electrons

In, 49 protons, 49 electrons

What is one goal of physical science?

Will a double replacement reaction occur if a potassium hydroxide solution is mixed with a lead (II) nitrate solution? Briefly explain.

What do igneous, sedimentary, and metamorphic rocks have in common?

Which of these statements is not true about chemical reaction rates? A) Temperature can change a reaction rate B) The amount of reactants can increase the reaction rate C) Temperature can decrease the reactions rate D) Temperature does not affect

Reaction 1 (A⟶B) has a ΔG=+3 kJ/mol, reaction 2 (B⟶C) has a ΔG=-6kJ/mol, and reaction 3 (C⟶D) has a ΔG∘=+1 kJ / mol.

Which element has an ion that is smaller than an ion of calcium?

Which factor is responsible for the weak attraction between diatomic molecules of the halogens (group 7A) ? A) Hydrogen bonding B) Ionic bonding C) Dipole interactions D) London dispersion forces

Which is the correct equation for refractive index?

Alcl3) and lithium sulfate (li2so4) (note - this is a double replacement reaction. you need this information to predict the products of the reaction)

Which type of bond is present in hydrogen sulfide (H2S) ? The table of electronegativities is given.