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3 years ago

Which of the following pairs of elements will not

Chemistry

1 answer:

Andreas93 [3]3 years ago

3 0

Answer:

a. sulfur and oxygen

b. sodium and calcium

d. oxygen and chlorine

Explanation:

The ionic compounds have to be made with element with positive charge(metal) and element with negative charge(gas). Both sulfur and oxygen is gas with negative charge. Both sodium and calcium is metal with positive charge. Chlorine also gas, so it can't make ionic compound with oxygen.

Sodium and sulfur is the only option that can make ionic compound since Sodium is metal and sulfur is gas.

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(AKS 2e) Group 2 metals bond with nonmetals or polyatomic ions. What question

Lyrx [107]

Answer:

Will group 2 elements lose electrons to bond with nonmetals in group 17 in a

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Explanation:

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3 years ago

The equation for photon energy, E, is E=hc/λ

Leni [432]

Answer:

The wavelength, λ, of a photon that has an energy of E = 3.92×10⁻¹⁹ J is 5.054*10⁻⁷ m

Explanation:

The wavelength is defined for every periodic wave, that is, for the type of wave that repeats itself with exactly the same shape every given interval of time. It is the distance between two points from which the wave repeats.

Radiation is the emission, propagation and transfer of energy in any medium in the form of electromagnetic waves or particles.

The energy carried by electromagnetic radiation travels by waves. This energy is transmitted grouped in small "quanta" of energy called photons. The energy of a photon is measured in Joules (J) and is

$E=\frac{h*c}{wavelength}$

Being:

E=3.92×10⁻¹⁹ J
h= 6.626×10⁻³⁴ J⋅s (Planck's constant)
c = 2.99×10⁸ m/s (the speed of light)
wavelength=?

and replacing:

$3.92*10^{-19}J =\frac{6.626*10^{-34}J.s*2.99*10^{8}\frac{m}{s} }{wavelength}$

you get:

$wavelength =\frac{6.626*10^{-34}J.s*2.99*10^{8}\frac{m}{s} }{3.92*10^{-19}J}$

wavelength= 5.054*10⁻⁷ m

<u><em>The wavelength, λ, of a photon that has an energy of E = 3.92×10⁻¹⁹ J is 5.054*10⁻⁷ m</em></u>

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3 years ago