Answer:
Hg, Tl, Pb, Bi.
Explanation:
The elements that are all in the same period are: Hg, Tl, Pb, Bi.
Kindly, find the attached image that show that all elements are in period 6.
Rb, Sr, La, Zr
:
All are in period 5 except La is in period 6.
Al, Ga, Si, P
:
All are in period 3 except Ga is in period 4.
N, O, Cl, Br:
N, and O are in period 2. While Cl is in period 3 and Br is in period 4.
Answer:
The process of forming the iron - rich core, the low density crust which is also rich in silicon, oxygen, aluminum, and the intermediate density mantle rich in silicon, oxygen, and magnesium is called the differentiation. Thus, the answer to this item is letter A.
Explanation:
Answer: They have vessels, and produce seeds.
Explanation: Flowering plants have vascular tissue and use seeds to reproduce.
Answer:
Electrons
Explanation:
The particles found in the cloud surrounding the nucleus of an atom are the electrons.
These particles occupies the bulk volume of the atom.
- Electrons were first discovered by J.J Thomson from his experiment on the gas discharge tube.
- These particles carries a negative charge on them.
- They have a mass of 9.11 x 10³¹kg