atomic number is equal to proton number
so the proton number will be 87
Will i thank <span>consists of many volumes
hope this help!!!!!!!!</span>
Answer:
Yes
Explanation:
Because it was false because it has been the substance abuse permalink
Alpha particles are relatively heave and can be stopped by a sheet of paper.
Answer:
a. Be and Mg
Explanation:
Be (beryllium) and Mg (magnesium) are both found in the alkaline earth metals family (group 2) on the periodic table. Elements in the same family or group have similar properties,
Ca and Br are in groups 2 and 17
Cl and Ar are in groups 17 and 18
Na and P are in groups 1 and 15
