Figure 8 shows the volume of gas produced when a different Group 2 carbonate, W, is heated.
Figure 8
300
Volume 200
of gas
in cm
100
0
0.0
0.5 1.0 1.5
2.0
Mass of Group 2 carbonate heated in g
Calculate the gradient of the line in Figure 8
Give the unit.

n has four pairs of electrons in the valence shell, electrons repel one another ,n has 7 protons in its nucleus, and since n has 7 protons, it must fill the second shell, giving it 4 pairs of electrons. the electrons form 3 bonds and 1 lone pair of electrons. each pair of electrons repels the other pairs, so they are equally far apart.

so all of the above

hi my dude or dudette