The elements of the periodic table are arranged in horizontal rows according to each successive element's greater ... ?

1. atomic mass

2. atomic radius

3. number of protons

4. number of neutrons

In a chemical reaction, the number of moles of the reactants

An element's most stable ion forms an ionic compound with bromine, having the formula XBr. If the ion of element X has a mass number of 85 and has 36 electrons, what is the identity of the element?

How are atoms in the same period similar and how are they different?

The valence electrons occur in what part of the atom? a. the nucleus b. in each electron shell c. the outer electron shell d. the innermost electron shell

How can nonpolar molecule contain polar covalent bonds

Which of the following phases of matter takes the shape of its container and has definite volume? Question 1 options: plasma solid gas liquid

If you breathe normally you have about 0.11 moles of air in your lungs and a volume of 2.4 L. If you then take a deep breath all the way, you will have 0.27 moles of air in your lungs. How big will your lungs be?

What's the isotopic symbol for sodium

Which of the following would likely be part of an ionic bond? Choose all that apply. A. K+1 B. Cl2 C. F-1 D. Ne

Freud argued that a person was more likely to commit crime when what part of the personality wasn't fully developed?