Which pair of elements has the most similar properties?

a. K and He

b. Li and B

c. I and Ca

d. N and P

And Atom of which element has the largest atomic radius

What does the kinetic theory state?

How many grams of Pb and FeSO4 are required to produce 200 grams of PbSO4?, what mass of Fe is also produced? 1Pb+1FeSO4 - > 1PbSO4+1Fe

What do acids and bases have in common? O A. They are both corrosive and can burn skin. O B. They both have pH values lower than 7. O C. They are both found in many foods. O D. They are both commonly used as cleaners.

How many milligrams of sodium sulfide are needed to completely react with 25.00 ml of a 0.0100 m aqueous solution of cadmium nitrate, to form a precipitate of cds (s) ?

What are the properties of metal, nonmetal, and mellaloids

The big bang is through to have started by an?

What is the word equation for KNO3 = KNO2 + O2

Which of the following is true of mixtures? A) a mixture is a combination of two or more substances in which each substance retains its own properties B) A mixture is composed of a single pure substance C) A mixture must contain multiple compounds

Identify the main source of energy used by most organisms