Bellringer for Friday 5-22-20

Posljednje ažuriranje almost 6 years ago

2 questions

An atom has 30 protons, 30 neutrons, and 30 electrons. What is the charge of the atom’s nucleus?

a +30

b +60

c -30

d +90

f The 11 electrons in each atom of sodium

g The density of sodium which is 0.971 g/cm³

h The atomic mass of sodium, which is 22.98 amu

j The 1 valence electron in each atom of sodium