Answer:
Option C = three electrons are gained, making N⁻³
Explanation:
Nitrogen is present in group 5A.
Its atomic number is seven.
It have five valance electrons.
Its electronic configuration is N₇ = [He] 2s² 2p³
In order to complete the valance shell or 2p subshell nitrogen must gain three more electrons.
When an atom gain the electrons anions are formed and negative charge is created on it.
When an atom lose its valance electrons cation is formed and positive charge is created.
That's why when nitrogen gain three electrons to complete the valance shell N⁻³ is formed.
This is how Magnesium appears on the table of elements
12
Mg
Magnesium
24.305
The symbol for it is Mg
Answer:
A) False
B) True
Explanation:
The question is incomplete. The complete question is as follows.
There are two statements. Identify which statement is true or false.
A) For any substance, solid, liquid or gas, mass increases as volume increases.
B) Density represents mass per volume.
Statement A
- Mass is defined as the amount of matter in an object. Its fixed and can't be changed.
- Volume on the other hand is the amount of space an object takes up.
Since the amount of matter is fixed, an increase in volume doesn't cause an increase in mass. For example, a test tube, with a volume of 10ml, contains liquid fragrance. When heated, the fragrance vaporizes and fill the entire room, until you can smell it in every corner. Note that previously the fragrance of same mass was occupying a 10ml space in the test-tube. After heating, the same mass of fragrance occupied the entire room (volume increased but mass remained constant).
It happened because as the fragrance is heated, the space between molecules increases causing them to occupy more space BUT in the whole scenarios, the number of molecules stayed unaffected. <u>Hence statement A is false.
</u>
Statement B
Density measures the compactness of the substance. It's defined as the amount of mass per unit volume. It increases as the atoms/molecules in a substance comes closer. Density of solids are greatest as the atoms/molecules are tightly packed together. It is least in gases as the molecules are far apart from each other. <u>Hence the statement is true.
</u>
Answer:
<h2>there are 5600000000 micrograms in 5.6 kg</h2>
<h2>........ here your answer </h2>
