Answer:
Explanation:
The ionic compound CuCl2
is a binary compound called Copper (II) Chloride.
This compound is composed of a metal cation of copper with a charge of Cu+2
and a non-metal chloride ion Cl−1. It takes two Chloride
Cl−1 to balance the Copper
Cu+2
. This makes the formula
CuCl2
The copper is the metal, it is located in the middle section of the periodic table known as transition metals. These metals may have more than one possible ionic charge. Copper can have a +1 charge
Cu+1
or a +2 charge
Cu+2
. The roman numeral in the formula name identifies the charge on the atom.
The Cu+2
ion is referred to as Cupric in a system known as Latin Naming, while the
Cu+1
ion is called Cuprous.
So this compound can be named as Copper (II) Chloride or Cupric Chloride.
The total number of protons and neutrons in an atom is called the mass number. You can find the mass numberfor any element. The mass number canbe found by rounding the average atomic mass to the nearest whole number.
as an example
6.25 is closer to 6 than 7 so it is 6
6. 50 is closer to 7 so it is 7
you have to look at the thenth digit. if the number is 4 or less you have to round it down
if the tenth digit is 5 or greather than you have to round it up.
Expression for the Balmer series to find the wavelength of the spectral line is as follows:
1 / λ = R
Where, λ is wavelength, R is Rydberg constant, and n is integral value (4 here → Fourth level)
Substitute 1.097 x 10⁷ m⁻¹ for R and 4 for n in the above equation
1 / λ = (1.097 x 10⁷ m⁻¹)
= 0.20568 x 10⁷ m⁻¹
λ = 4.86 x 10⁻⁷ m
since 1 m = 10⁹ nm
λ = 486 nm
A tall, horizontally subdivided or packed container for fractional distillation in which vapor passes upward and condensing liquid flows downward. The vapor becomes progressively enriched in more volatile components as it ascends, and the less volatile components become concentrated in the descending liquid, which can be drawn off.
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