Answer: Bismuth (Bi) , Nitrogen family
Explanation:
As the element has 5 valence electrons in the sixth energy level, which mens it belongs to 6th period as the valence electron has entered the 6th energy level.
Now as the electrons are filled according to afbau's rule , the electronic configuration of the element will be :
![[Xe]4f^{14}5d^{10}6s^26p^3](https://tex.z-dn.net/?f=%5BXe%5D4f%5E%7B14%7D5d%5E%7B10%7D6s%5E26p%5E3)
Now as the atomic number of element is equal to the number of electrons in a neutral atom , the atomic number is 83 and the element is Bismuth (Bi). As the last electron enters p -subshell , it is a p block element. It lies in group 15 which is nitrogen family.
Answer: Keep your station dry + Pull on the plug, not the cord.
Explanation:
Any answer containing the mention of "wet" or is related to water isn't appropriate and safe when working near electrical equipment due to the dangers it can present.
Answer:
HCl
Explanation:
The best solvent for NaF is a polar liquid. The only liquid having a significant dipole moment among the options is HCl due to the large electro negativity difference between hydrogen and chlorine.
The polar solvent can interact with the NaF via its dipoles such that the NaF dissolves due to ion-dipole interaction.
Volume of liquids are measured in experiments. The volume is measured by taking reading that coincides with the lower meniscus of the liquid. There are several measuring devices used in laboratory such as beakers, measuring cylinders, volumetric pipets etc. volume measured from volumetric pipets are considered to be more precise than from measuring cylinders because they are simple, and its long neck lowers the chances of error in looking for the meniscus.
B. What potential resources could be gained from the rise of asteroid mining ?
