Log ind
WAEC - Physics (1994 - No. 29)
The nucleon number and the proton number of a neutral atom of an element are 238 and 92 respectively. What is the number of neutrons in the atom?
330
238
146
119
73
Forklaring
238 - 92 = 146
Kommentarer (0)
Log ind for at kommentere
Reklame
Tillad, at javascript indlæser denne side korrekt
