Answer:
Halogens
Explanation:
The halogens are a series of non-metal elements from group 17 of the periodic table (formerly VII). The halogens include fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
As molecular mass increases, van der Waals interactions between molecules also increase, because numbers of electrons in the molecules.
Iodine (I) has greatest atomic number, so the number of electrons.
Hydrogen fluoride is exception, because hydrogen bonding between molecules.
Hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (H), covalently bound to a highly electronegative atom such as flourine (F), oxygen (O) and nitrogen (N) atoms.
Answer:
NO₃⁻.
Explanation:
- Spectator ions are the ions that is present in the same form on both sides of a chemical equation (do not change).
For the reaction: Mg(s) + Zn²⁺ + 2NO₃⁻ → Mg²⁺ + 2NO₃⁻ + Zn(s),
- The reactants' side contains two ions
: Zn²⁺ and NO₃⁻.
- Also, the product's side also contains two ions
: Mg²⁺ and NO₃⁻.
<em>Because the nitrate anions are present on both sides of the equation, they are spectator ions.</em>
BCAA supplements are commonly taken to boost muscle growth and enhance exercise performance.
They may also help with weight loss and reducing fatigue after exercise. This article contains all the most important information about branched-chain amino acids and their benefits.
<h3><u>What are purposes of Branched-chain amino acids (bcaas) ?</u></h3>
- Leucine, isoleucine, and valine are the three essential amino acids that make up the branched-chain amino acids (BCAAs).
- Since they are vital, your body cannot create them on its own and you must get them through food.
- BCAA supplements have been demonstrated to increase muscular mass, lessen muscle pain, and reduce muscle fatigue.
- They have also been used successfully in hospitals to lessen liver disease symptoms and stop or slow down muscle loss.
- However, since the majority of people consume enough BCAAs from their diets, taking supplements is unlikely to provide any further advantages.
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The molecule expand to relieve steric strain before undergoing torsion to a non-planar structure in order to have several resonating structures.
<h3>What is a molecule?</h3>
It should be noted that a molecule simply mean the group of atoms that are bonded together that represents the smallest fundamental unit if the chemical compound.
It should be noted that structures containing fused benzene rings have extensive conjugation. Due to this, they can undergo resonance.
This is vital in decreasing the overall energy of the molecule and helps increase its stability. When there's a change in torsion angle to relieve the steric strain, the molecule won't be planar, hence, the energy will increase and the stability will reduce.
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