teyante7301
05.05.2020 •
Chemistry
An atom has a proton mass of 35, a neutron mass of 35,and an electron of 35.what is the esteemed mass of the atom?
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Ответ:
The number of valence electrons=increases from the left to right across a period.
The number of valence electrons=stay the same from the top to the bottom of a group.
Electrons are added into the outermost=s orbital in Groups 1 and 2.
Electrons are added in the outermost=d orbital in Groups 3 through 12.
Electrons are added in the outermost=p orbital in Groups 13 through 18.