It is given that the charge on potassium is +1 i.e. Potassium is a cation, K⁺
The charge on selenium is given as -2, i.e. selenium is an anion, Se²⁻
The two ions are shown to combine to form a molecule: KXSeY where X and Y correspond to the proportions in which the two atoms combine.
Since the molecule is neutral, the positive and negative charges need to be balanced. This is possible only if 2 units of K⁺ combines with 1 unit of Se²⁻.
Therefore, the formula would be K₂Se
X = 2 and Y = 1
Answer:
The mass (M) and speed of an object (v)
Explanation:
An chemical symbol is an abbreviation for the name of an element and usually had either one or 2 letters.
Answer:
electrons are moved through a magnet creating a current. the current instracts with a circuit, moving the conductor in the onentation of the field
Isotopes have same atomic number or same number of protons, but different number of neutrons and mass number.
If they have same atomic number or same number of protons as the original one they are isotopes.
