Answer:
Element X is Arsenic (As)
Explanation:
- Elements in the periodic table are either metals, non-metals or metalloids.
- Metals are elements that react by losing electrons to obtain a stable configuration and form cation.
- Non-metals are those elements that react by gaining electrons to form a stable configuration and form anion.
- Metalloids are elements in the periodic table that have both metallic and non-metallic properties.
- Examples of metalloids include Selenium, Arsenic, Boron, etc.
- Arsenic is a metalloid in period 4 (four energy levels) with five valence electrons.
Answer:
compaction and cementation
I love science by the way
D Direction of motion I hope this helps
B. examining the number of chromosomes in population
A group goes vertically and a period goes horizontally.
(a group goes down and a period goes across)
