Two highly reactive elements in period 2 of the periodic table are the metal lithium and the ... ?

a. Metalloid arsenic

b. Krypton

c selenium

d. fluorine

What is true for two pieces of iron at the same temperature? Heat flows from the larger object to the smaller object. The average kinetic energy of their particles is the same. The total kinetic energy of their particles is equal.

Whould a noble gas like argon gain or lose electrons?

6. a single product is produced Is called what? Combustion reaction Decomposition reaction Single replacement Synthesis reaction

Small children are occasionally injured when they try to inhale helium from a compressed helium tank. If a small child tries to transfer the contents of a 50 L tank of helium at a pressure of 125 atm and a temperature of 20° C into its lungs, how

The solar system moves at the speed of 828,000 km/h. Tara writes the following steps to calculate this speed in decameters/second (dm/s). [1 km = 100 dm] Step 1: Divide 828,000 by 100. Step 2: Divide the result obtained in step 1 by 60.

Least reactive element of period 3

A chemical formula shows the kind and number of Atoms that form a what? compound, mixture, solution, or suspension

What gas was used as a deadly posiosn in world war 1?

Four moles of hydrogen chloride (HCl) gas react with one mole of oxygen (O2) gas to produce two moles of chlorine gas (Cl2) and two moles of water gas (H2O).

what noble gas electron configuration is achieved by the bromine atoms in a molecule of BR2, a diatomic element?