The angle between the vectors a and b is 120 oc
and | a | = 3 | b |.
define the scalar λ such that a + b and a − λb are perpendicular to each other.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

give me abc and i will get it for u.