-7 = 3s - 1
+1 +1 (add 1 to both sides to get the variable alone)
___ ____
-6 = 3s
__ ___ (-6 and 3s both divided by 3)
3 3
-2 = s
the abbreviated electron configuration of sodium is (Ne) 3s1
Yep!
3s1
1s22s22p63s1 or [Ne]3s1
[Ar] 3s1
1s2, 2s2, 2p6, 3s1. It the the '3s1' electron that readily ionises m because it is in the outer most electron energy shell.
1s2 2s2 2p6 3s1
[Ne]3s1
To find the number that, when multiplied by 7, equals 49, you can divide 49 by 7. Doing the calculation, 49 divided by 7 equals 7. Therefore, 7 times 7 equals 49.
x = 14
16-7 equals = 9
37-7 equals = 30