The most active of all the chemical elements is a halogen known as

A. astatine.

B. bromine.

C. fluorine.

D. iodine

What is a "curie"? standard charge of alpha particles mass of one alpha particle standard emission rate of alpha particles a unit of gamma radiation

How many neutrons does an element have if its atomic number is 47 and its mass number is 150?

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

All reversible reactions will reach chemical equilibrium

Which situations make use of interactive multimedia and which do not? Amelia is exploring a shopping website looking for clothes or accessories she could give to her sister.

Which of the following is the major advantage of using geothermal energy instead of using coal energy? Choice: You will get a brainliest! If your correct! A. More abundant than coal B. Easier to access than coal C. Releases less carbon dioxide D.

What is berylliums energy levels

What is the SI base unit of temperature? Celsius kelvin coulomb Fahrenheit

What property of an object is expressed by the measurement of an item's mass per unit volume? A. density B. viscosity C. surface tension D. buoyancy

Which type of wave cannot move without a medium in which to travel? Heat waves Light waves Sound waves Transverse waves