True, at least as far a chemical properties go. The number of neatrons does affect how a nucleus behaves in nuclear physics, however.
Yes. Mendeleev did group elements in similar properties.
False. Neutrons have no charge so can not repel each other.
true
That is false! :) I promise you.
true
false
false
Yes. Mendeleev did group elements in similar properties.
False
atoms are composed of protons, electrons and neutrons..
False. Number of neutrons.
False. Properties within a group are more alike than properties within a period.
false
sex
False. Neutrons have no charge so can not repel each other.
true
It is false.