Use the periodic table to determine which of the

following could be an isotope of bromine (Br).

Check all that apply.

- Z = 79, A = 196

Z = 35, A = 79

A = 79, N = 44

Z = 44, N=44

NDN

DONE

What type of compound does the formula, HCl, represent? A. Ionic salt b. Covalent molecule

What is the only element in group 1 on the periodic table that forms covalent bonds?

Consider an atom of oxygen in which the nucleus contains 8 protons and 8 neutrons. If it is doubly ionized, what is the charge of the oxygen ion and how many electrons remain in the ion?

How many significant figures are there in the number 3.04

Which of the following elements has the lowest electronegativity? a. lithium b. Carbon C. bromine d. fluorine

Which is true about dissolving a polar substance in water? A) the solvent particles are all nonpolar molecules B) the solute particles are carried into the solution C) the solute particles have no attraction for the solvent molecules D) the solute

Which societal problem can be solved, in part, by scientists identifying areas of high biodiversity? A. reducing the amount of pollution B. finding affordable housing C. protecting the environment D. providing access to clean water

Brianna wanted to compare the densities of two different solids of the same size 6cm3 (same volume) to see which one was more dense. Solid A had a mass of 2 grams and Solid B had a mass of 0.5 grams.

Which type of bond is present within a water molecule

Every oxygen atom has 8 electrons. what can you learn from the electron configuration of oxygen