Answer:
Carbon is a solid non-metal element. Carbon has eight valence electrons.
Explanation:
hope this helps!
Answer is valence electron, they all have total of 2 valence electron.
remember group number = valence electron
The reaction equation represents the mole number ratio. So the hydrogen is 8/2=4 mol. Oxygen is 64/32=2 mol. So the water is 4 mol. The mass of water is 4*18=72 g. Or if it is confirmed that they are completely reacted. You can simply add them up.
Answer:
The second row elements are called Actinidies . abbreviated as Ac
Explanation:
