4a+3a-4 = 10 4a+3a = 10+4 7a = 14 a = 2
18
It is an equation in the single unknown variable, a. a = -4
4a*4a*4a = 64a3 cubic units
8
4A
4A
4a+3a-4 = 10 4a+3a = 10+4 7a = 14 a = 2
2a + 9 = 4a - 19 9 + 19 = 4a - 2a 28 = 2a a = 14
Silicon is in Group 4A or 14.
Gorup 14 or 4A
group: 14 or IVA (not 4A) period: 2
18
5a or 4a squared
It is an equation in the single unknown variable, a. a = -4
(4a)2 or 16a2
Silicon is found in group 14 of the periodic table. It has 4 valence electrons in its outer shell.