What element has the electron arrangement 2,8,4?

How were the Great Lakes formed? Question 4 options: The Great Lakes were formed by a huge flood that took place 200 years ago. The Great Lakes were formed by a retreating glacier that dug out large basins.

3. Water changing from a solid directly into a gas is

Which element is less electronegative than barium

What is the correct value for 60. mi/hr expressed in m/s

The process of ___ occurs when a hydrate loses its water of hydration. a. effloresce b. hydration c. deliquescent d. solvation

Complete and balance the molecular equation, including phases, for the reaction of aqueous ammonium bromide, nh4br, and aqueous lead (ii) acetate, pb (c2h3o2) 2.

A magnesium atom has 2 valence electrons in its third shell. Which is a TRUE statement about what happens when it forms an ion? A. It will be an anion. B. It will have more electrons than protons. C.

What scientific discoveries led to changes in Dalton's atomic theory?

What does berkelium react with

Classifying living things