Answer:
a. fluorine
Explanation:
Fluorine is the element of group 17 and period 2. The electronic configuration of the element is 
.
Stable oxidation state = -1 of fluorine as it gains one electron to gain noble gas configuration.
With alkali metals, which have oxidation state of +1 form ionic compound of the form, MX where X is F.
Among the halogens, fluorine forms the most stable halide because of the comparable size of the hydrogen and fluorine. Thus, it is the weakest acid when compared with other hydrogen halides.
Fluorine is the most reactive in the halogen series and thus, combines with most of the elements.
Fluorine forms inter-halogen compounds of form XA only. Example - ClF.
Hence, option a is correct.
The half life of carbon-14 is 5700 years. (Half life is the time taken by a radioactive isotope to decay by half of its original mass).
Let A₀ be the initial amount of carbon-14 that is found in living matter (t=0 years), to determine when there was 44.5% of A₀ left.
44.5 = 100 × (1/2)^n, where n is the number of half lives
0.5^n = 0.445
n = log 0.445/log 0.5
n = 1.168
But 1 half life is 5700 years
Therefore, the number of years will be 5700 × 1.168 = 6658.299725 years
≈ 6658.30 years
I don’t get what ur asking
When light shines on a metal, electrons can be ejected from the surface of the metal in a phenomenon known as the photoelectric effect. ... The photoelectric effect. In the photoelectric effect, light waves (red wavy lines) hitting a metal surface cause electrons to be ejected from the metal.
Answer:
<u>No expression would be seen in the bacterial cell for the hGH gene</u>.
Explanation:
<u>The bacteria cannot remove the intronic sequence from a gene.so if the gene for hGH where transcribed to the bacteria it would translate to a non functional protein.Also the bacterial RNA Polymerase will not bind to the eukaryotic promoter sequence.</u>
