The energy required to remove an electron is always much, much greater if the atom is

isoelectronic with a

before the electron is removed

Extreme (1, 2, or 3) in the center of nebulae causes hydrogen atoms to shed their electrons and collide with one another. The (4, 5, or 6) of the collisions cause the smaller, bare nuclei to fuse into large helium nuclei. 1. expansion 2. heat 3.

List a few ways that would lead you to believe a chemical reaction has occurred

What is the pH of a 0.45 M solution of hydrochloride acid (H

Explain how you would make 500ml of a 0.100 m naoh solution

How many liters of 18.5 molar HCl stock solution will be needed to make 25.0 liters of 1.5 molar HCl solution? Show the work used to solve this problem.

Which reaction represents an unbalanced neutralization reaction? Na + H2O NaOH + H2 HNO3 + NaOH NaNO3 + H2O NaNO3 + H2O HNO3 + NaOH H2O H2 + O2

How does the health of polar bears indicate the health of the environment

Our body needs iron. Certain foods are rich in iron and iron tablets are usually recommended by doctors. but neither the food nor tablets are hard like iron? Why?

Under which conditions are gases most soluble in water?

Use the periodic table from the lesson to answer the following question. the atomic mass of f is ___.