x is the chemical symbol of the element and it must correspond to the atomic number
Ca2+ and Cl- are examples of ions. There are two types of ions: (1) the positively charged which are called cations and (2) negatively charged which are more commonly referred to as anions.
The charges of the ions identify their reactions with other ions. Like charges do not react and repel each other while unlike charges will attract. Hence, in this item, the ions will attract each other. Further, the reaction between this two ions will form a formula unit, CaCl2.
The given statement is true, because the activation energy must be provided in order for the molecule to reach the transition state because it is a high-energy state. Reactant molecules don't stay in the transition state for very long since it is unstable; instead, they move on to the next phase of the chemical reaction right away.
To create a successful transition state (with lower activation energy). Heat, which is the most frequently employed energy source, favours the breakdown of processes and lowers the amount of energy needed when the enzyme attaches to the substrate.
The remainder of the process can be completed once the molecule has taken in enough energy to reach the transition state.
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B)
Explanation:
The lewis structure shape of PF4+ is tetrahedral with the positive charge on phosphorus atom.