Question 9 (1 point) . Each of the following is a property of Magnesium. Which is a chemical property?
a
Ob
reacts with oxygen to produce a white powder
has a density of 1.738 g/cm3
can be drawn out into a thin wire
d
melts at 650°C

i think the answer is terrae but not 100 percent sure. ▓▬▬ §

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.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8