The atomic number of krypton (Kr) is 36, and its mass number is 84. How many neutrons does It have? O A
18
OB
36
Oc.
48
OD
72

Explanation:

We are given with the atomic number (36) which means that we have 36 protons and 36 electrons. Using this information, we can get the number of neutrons. Recall that mass number is equal to the sum of the protons and neutrons in the atomic nucleus. Therefore, there are 48 neutrons in Krypton-84.

d. temperate deciduous forest

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i