Answer:
Different isotopes of the same element have the same number of protons in their atomic nuclei but differing numbers of neutrons. Radioisotopes are radioactive isotopes of an element. They can also be defined as atoms that contain an unstable combination of neutrons and protons, or excess energy in their nucleus.
Answer:
Explanation:
Data:
Mass of NaCl = 4.6 g
Mass of water = 250 g
Calculations:
Mass of solution = mass of NaCl + mass of water = 4.6 g + 250 g = 254.6 g.
(a) For the compound XF₂, X must be a metal. As fluorine is monovalent and there are two fluorine atoms, so the valency of X must be two.
Therefore, X belongs to group 2.
A metallic compound is a compound that contains one or more metal elements bonded to another element.
The elements are bonded with the help of metallic bonds.
Monovalent compounds are compounds which consist of an atom which has only a single covalent bond.
The covalent bond is defined as an interatomic linkage formed by sharing the electronic pair between two atoms.
Valency is the combining power of an element. It helps with bond formation.
To know more about Bond formation, refer to this link:
brainly.com/question/12937609
#SPJ4
Answer:
3.68 L
Explanation:
- Use combined gas law
- Change C to K
- Hope that helped! If you want to learn how to do these, I would be glad to help.
