What is the average atomic mass of an element that has 3 isotopes with the data below? Isotope
X-22
X-23
X-24
Percent Abundance
85.0%
5.0%
10.0%
Show all of your calculations for full credit.

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.