Answer: 
Hz
Explanation: Recall the formula for the speed of light is
where 
is the speed of light,
is the wavelength, and 
is the frequency. Assuming this takes place in a vacuum, 
m/s. Now we can solve for frequency
(rounding to 3 sig figs)
Thus, the frequencyis Hz.
The outer shell of the atoms in group D of the periodic table consists of elements whose outermost shell is full
Their outermost shell consist of elements with valence electrons
The group D elements are found in between S and P blocks of the periodic table
<h3>What is an element?</h3>
An element is a substance which cannot be split into simpler units by ordinary process.
Few examples of elements which belongs to group D include the following:
- Scandium
- Titanium
- Vanadium
- Chromium
- Manganese
- Iron
- Nickel
- Copper
- Zinc
Learn more about elements:
brainly.com/question/14514242
Answer:
See explanation
Explanation:
We know that photosynthesis involves the combination of carbon dioxide and water in the presence of sunlight to yield glucose.
If the atmosphere is rich in carbon dioxide such as in a green house where air is filled with carbon dioxide, the rate of photosynthesis is increased.
As the rate of photosynthesis is increased, the growth of plants is also increased.
Hence, in a greenhouse where the air contains more carbon dioxide, the rate of plant growth increases.
Answer:
Ca is larger than the Ca2+ because Ca2+ has a greater positive charge and electrons repel the nucleus.
