HCl is a covalent compound formed by sharing one electron between chlorine and hydrogen. Because chlorine is more electronegative than hydrogen, the shared pair of electrons shifts towards the chlorine atom. … Hence, the covalent bond is polar in nature. Is HCl polar or ionic? It confirms that the H-ClRead More →
In a nonpolar covalent bond, the electrons are evenly distributed. You can predict nonpolar molecules will form when atoms have the same or similar electronegativity. … Nonpolar molecules also form when atoms sharing a polar bond arrange such that the electric charges cancel each other out. Why do polar andRead More →
Effectors are parts of the body – such as muscles and glands – that produce a response to a detected stimulus. For example: a muscle contracting to move an arm. muscle squeezing saliva from the salivary gland. What does effector mean? 1 : one that causes or brings about somethingRead More →
The temperature, at which the rms velocity of hydrogen is four times of its value at NTP is: 819. 1090. At what temperature will the rms velocity of hydrogen be double of its value at NTP? Temperature at NTP is 25 °C i.e. 298 K. What is rms velocity ofRead More →
If the arrangement is symmetrical and the arrows are of equal length, the molecule is nonpolar. If the arrows are of different lengths, and if they do not balance each other, the molecule is polar. If the arrangement is asymmetrical, the molecule is polar. What types of molecules are polar?Read More →
: an enzyme that breaks down a nucleic acid by removing nucleotides one by one from the end of a chain — compare endonuclease. Is exonuclease a restriction enzyme? Exonulceases form sticky ends. Specific endonucleases, also called restriction endonucleases, are available that cleave specific sites within a DNA sequence. ExonucleaseRead More →
Whenever two electrons are paired together in an orbital, or their total spin is 0, they are diamagnetic electrons. Atoms with all diamagnetic electrons are called diamagnetic atoms. A paramagnetic electron is an unpaired electron. An atom is considered paramagnetic if even one orbital has a net spin. Is F2Read More →
Molecular orientation, atomic radii, and electron density are the main three factors that influence the Polarizability in the following way: As the number of electrons increases, the control on distribution of charge by the nuclear charges becomes less, and thus the Polarizability of atom increased. Why are heavier molecules moreRead More →
These materials are not attracted to magnets and cannot become magnets. In other materials, there are regions where the north and south poles of atoms are all lined up in the same direction. … Materials that can be magnetized are called ferromagnetic materials. What elements are attracted to a magneticRead More →
The polymerase unwinds the DNA at the position at which transcription (more…) After the RNA polymerase binds tightly to the promoter DNA in this way, it opens up the double helix to expose a short stretch of nucleotides on each strand (Step 2 in Figure 6-10). What happens to DNARead More →