Answer:
They frequency = 3.9 * 10^16 Hz
The amount of energy E = 2.58 *10^-17 J
Explanation:
Step 1: Data given
wavelength is 7.67 * 10^-7 cm
Step 2: Calculate the frequency
f = c / λ
⇒ with λ = the wavelength in nm = 7.67 nm
⇒ with c = the speed of light = 3.00 * 10^8 m/s
⇒ f = the frequency = TO BE DETERMINED
f = (3.00 * 10^8 m/s) / 7.67 * 10^-9 m
f = 3.9 * 10 ^16 /s = 3.9 * 10^16 Hz
They frequency is 3.9 * 10^16 Hz
Step 3: Calculate the amount of energy
E = h
*f
⇒ with E = the amount of energy (in joule)
⇒ h = Planck's constant = 6.626 *10^-34 J*s
⇒ with f = the frequency
E = 6.626 *10^-34 J*s * 3.9 * 10^16 Hz
E = 2.58 *10^-17 J
Answer:
Magnesium
Explanation:
When an atom loses are gain the electrons ions are formed.
There are two types of ions.
Anion
Cation
1 = Anion
It is formed when an atom gain the electrons. when atom gain electron negative charge is created on atom. For example.
X + e⁻ → X⁻
2= Cation
It is formed when an atom loses the electrons. when atom lose electron positive charge is created on atom. For example.
X → X⁺ + e⁻
There are seven valance electrons in iodine. To complete the octet it gain one electron and form anion.
Sulfur has six valance electrons it gain two electrons to complete the octet and form anion.
Phosphorus has five valance electrons it gain three electrons two complete the octet and form anion.
Magnesium has two valance electrons it loses two electron to complete the octet and form cation.
Answer:
<h2><u><em>100 kcal of bond energy</em></u></h2>
<u><em></em></u>
When an organism is buried quickly there is less decay and better the chance for it to be persevere. The hard parts of the organism such as bones, shells, and teeth have a better chance of becoming fossils that softer parts of the organism. HARD BONES.
