Answer:
.
Explanation:
Based on the electron configuration of this ion, count the number of electrons in this ion in total:
.
Each electron has a charge of 
.
Atoms are neutral and have 
charge. However, when an atom gains one extra electron, it becomes an ion with a charge of . Likewise, when that ion gains another electron, the charge on this ion would become 
.
The ion in this question has a charge of . In other words, this ion is formed after its corresponding atom gains two extra electrons. This ion has 
electrons in total. Therefore, the atom would have initially contained 
electrons. The atomic number of this atom would be 
.
Refer to a modern copy of the periodic table. The element with an atomic number of is sulphur with atomic symbol 
. To denote the ion, place the charge written backwards ("
" for a charge of ) as the superscript of the atomic symbol:
.
Answer:
It has 140 neutrons because Mass number= No of protons + no of neutrons
Answer:
answer answer answer answer answer
Answer:
Kingdom Fungi refers to the group of eukaryotic organisms like fungi, mushrooms, molds and yeasts.
Explanation:
The fungi kingdom is made up of eukaryotic organisms whose cell walls are made of chitin.
Next I will name <u>some characteristics</u> of these organisms:
- They are not plants or animals
.
- They are responsible for absorbing nutrients from other organisms, which they use as food
.
- Some, like mushrooms and yeast, are edible.
- They present cellular orguils and vacuoles
.
- They lack chloroplasts
.
- They produce spores
.
- They are able to break down dead matter
.
- They develop in humid and dark areas
.
- Penicillin is obtained from these organisms.
