Add x on all of them I just took what ur taking rn !!!!!
22-yes, they belong to the same group
23- they are metals
24-Atoms of group 1 elements all have one electron in their outer shell. This means Na and K have the same valence electrons.
25-Metals are solids at room temperature, therefore Na and K are solid.
26- mass number=A=235
Protons=z=92
Neutrons=mass number-protons
Neutrons=A-Z
Neutrons=235-92
Neutrons=143
It’s the 3rd one obviously bro
A mole is most similar to Avogadro's number -
6.02 x 10^23
