Sagot :
Answer:
Group 2 1287°C, 2349°F, 1560 K
Period 2 2468°C, 4474°F, 2741 K
Block s 1.85
Atomic number 4. 9.012
State at 20°C Solid 9Be
complete na po yan
Atomic number ay 4
Answer:
4
Explanation:
The element with atomic number 4 is beryllium, which means each atom of beryllium has 4 protons.