PLEASE HELP! DUE IN 5 MINUTES! ( 10 points ) An atom of gold with 79 protons, 79 Electrons and 118 neutrons would have a mass number of
A) 39
B) 158
C) 197
D) 276

yes it is balanced

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

let that person have a turn to speak : )

answer: they produce more slow than unicellular organisms.