The fire emoji represents a streak. A streak in snapchat is defined as three days in a row in which you and a friend snap eachother. The number next to the streak tells you how many consecutive days you and a friend have snapped eachother. The fire emoji streak will appear when you have snapped three days in a row. Once you have started a streak the goal is to keep the streak alive for as long as possible.
In an atom of gold, there are 79 protons and 79 electrons. The number of neutrons for gold may vary by isotope. In an atom of gold, there are 79 protons and 79 electrons. The number of neutrons for gold may vary by isotope.
This image is part of the sequence science and technology: simple electron configurations of the elements. Credit: SCIENCE PHOTO LIBRARY. Caption: Gold (Au). Diagram of the nuclear composition and electron configuration of an atom of gold-197 (atomic number: 79), the most common isotope of this element. The nucleus consists of 79 protons (red) and 118 neutrons (blue). 79 electrons (green) bind to the nucleus, successively occupying available electron shells (rings).