The Correct choice is~ B
The elements shown in green boxes are ~ <u>Metalloids</u>
Answer:
In chemistry, a single bond is a chemical bond between two atoms involving two valence electrons. That is, the atoms share one pair of electrons where the bond forms. Therefore, a single bond is a type of covalent bond.
Explanation:
(copied from Google)
Answer:
b
Explanation:
beacuse when u reduce the concentration
An atom becomes an Ion (a) if it gains one or more electron(s) or (b) if it loses one or more electron(s). When it gains electrons it becomes negatively charged and is called an anion. When it loses electron(s) it becomes positively charged and is called a cation.
Answer:
100,000,000,000
Explanation:
Given that :
1 hubble space telescope pointed at 1 section of the sky reveals 10,000 distinct galaxies ;
Number of sections from which observation is to be made = 10,000,000
Number of distinct galaxy per section = 10,000
Number of galaxies that would exist in the known universe :
Total number of galaxies in the known universe :
Number of galaxies per section * number of sections
10,000 * 10,000,000
= 100,000,000,000s