I think it's 2 I tried looking it up because I was not sure.
Answer:
The idea with diluting a solution is that the number of moles of solute will remain constant after the initial solution is diluted. The only ...
Explanation:
hope it helps you
It is the darmstadtium element that has the electron configuration above and the atomic number of 110
Answer:
B
Explanation:
by simlfying it you get HCO2
Answer:
Answer in explanation
Explanation:
a. Boron , element 5
Helium has 2 electrons, add to the other 3 to give 5.
Other group members are : Aluminum Al, Gallium Ga, Indium In , Thallium Tl and Nihonium Nh
b. Sulphur, element 16
Neon is 10 , add other 6 electrons to make 16
Other group members are: Oxygen O, selenium Se , Tellurium Te and Polonium Po
c. Lanthanum, element 57
Xenon is 54, add the other 3 electrons to give 57.
Other elements in group : Scandium Sc , Yttrium Y , Actinium Ac, Lutetium Lu and/or Lawrencium Lr