We can say an atom is electrically neutral if both electron (for electric charge) and proton (for positive charge) have the exact same amount
Since the number are needed in some amount to be considered stable (*2-1st level<span>-need 8 for valence level) , </span><span> The atom that has 7 protons and 7 electrons would be considered enough</span>
It avoids confusion through scientists. If you think, they could be practicing or studying in varying countries and something uniform for science avoids all confusion!
Answer:
D) she is confident and has already made plans
Answer: -
Group 5 - Metalliods.
Group 7 - Halogens Group
Group 8 - Noble Gases
Explanation: -
Group 1 are the alkali metals.
Group 2 are the alkaline earth metals.
Group 5 are a part of transition metals which range from Group 3 to Group 12.
Group 17 are the halogens.
Group 18 are the noble gases.