Question

cif₃
yes, its a reasonable structure.
no, the total number of valence electrons is wrong.
the correct number is:
no, some atoms have the wrong number of electrons around them.
the symbols of the problem atoms are:

Explanation:

Step1: Calculate the total number of valence electrons

Chlorine (Cl) has 7 valence electrons, and each fluorine (F) has 7 valence electrons. For \(ClF_3\), the total number of valence electrons is \(7+(3\times7)=28\). In the given structure, there is a double - bond between Cl and F. A double - bond is incorrect as it would change the electron count. The correct structure should have single - bonds.

Step2: Check the octet rule

Fluorine follows the octet rule. Chlorine, as a third - period element, can have an expanded octet. But in the given structure, the double - bonded F has 10 electrons (4 non - bonding and 4 in the double - bond), which is wrong. Fluorine should have 8 electrons around it (6 non - bonding and 2 in a single - bond).

Answer:

No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: \(F\)