An atom with 13 total electrons and 3 valence electrons has core electrons.
A) 2
B)8
C)16
D)10

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons