The table below gives the numbers of protons, electrons, and neutrons in four atoms. AtomNumber of protonsNumber of neutronsNumber of electrons 1989 2998 39910 49109 Based on the table, which atom has a charge of –1? 1 2 3 4

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

може ли да зареждате повече информация, моля