Which pair of species have the most nearly

identical atomic and molecular properties?

1. 35/17Cl and 80/35Br

2. 7/3Li and 9/4Be

3. 23/11Na and 23/11Na+

4. 19/9F and 19/9F-

5. 12/6C and 13/6C

Determine the mass in grams of each of the following: (a) 0.600 mol of oxygen atoms (b) 0.600 mol of oxygen molecules, O2 (c) 0.60 mol of ozone molecules, O3

A voltaic cell consists of a strip of cadmium metal in a solution of cd (no3) 2 in one beaker, and in the other beaker a platinum electrode is immersed in a nacl solution, with cl2 gas bubbled around the electrode.

Which radioisotopes have the same decay mode and have half-lives greater than hour? (1) Au-198 and N-16 (3) 1-131 and P-32 (2) Ca-37 and Fe-53 (4) Tc-99 and U-233

In a voltaic cell based on the Cu-Zn reaction Zn (s) + Cu2 + (aq) - -> Cu (s) + Zn2 + (aq) there is exactly 1 mole of each reactant and product.

3 Which particle has no charge? (1) electron (3) positron (2) neutron (4) proton

A metal, M, forms an oxide compound with the general formula M20. In which group on the Periodic Table could metal M be found?

In your reading, perhaps you saw that in 1995, three chemists were awarded the Nobel Prize for their studies involving the ozone layer.

What is the resultant molarity of 20mL of a 3.5M solution is diluted to 100mL? Will mark brainliest

The shape of molecules that contain only two atoms is

Standing near a campfire, you can feel heat. This is an example of a) acceleration b) conduction c) convection d) radiation