Answer:
4 and 6
Explanation:
Period 4 has 18 elements and so does period 6.
Atoms with six protons and six neutrons — carbon. Carbon is a pattern maker. It can link to itself, forming long, resilient chains called polymers. It can also bond with up to four other atoms because of its electron arrangement.
Answer:
Here's the answer in order
A
B
B
C
C
A
A
D
A
C
D
Explanation:
lol nvm
Answer:
how strong it is
Explanation:
Seismographs are not able to say when earthquake will happen, but they help humans to know how strong it is or if it is happening or not
