Which of the following is a true statement? a. Periods form horizontal rows; groups form vertical columns
b. Groups form horizontal rows; periods form vertical columns
c. Categories form horizontal rows; gases form vertical columns
d. Gases form horizontal rows; categories form vertical columns

a. Periods form horizontal rows; groups form vertical columns

Explanation:

On the periodic table of elements, it is true that periods form horizontal rows and groups form vertical columns.

In the periodic table, elements having the same number of electrons in the outermost shell of their atoms are placed over one another in vertical columns.

i believe that it is a exoplanet

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)