Answer : The correct option is, (1) Gains an electron and its radius increases.
Explanation :
The given element is chlorine.
Atomic number of chlorine = '17'
The electronic configuration of chlorine is, 
Number of electrons = 17
Number of protons = 17
The electronic configuration of chloride ion is, 
Number of electrons = 18
Number of protons = 17
When the chlorine atom gains an electron to acquire a stable electronic configuration. As the electrons add in the valence shell of the chlorine, the number of electrons increases but the number of protons remains the same. So, the protons will not be able to bind the extra electron and it will remain far from the nucleus.
Covalent bonding is the sharing of electrons between atoms. This bonding occurs primarily between nonmetals. <span>If atoms have similar electronegativities (the same affinity for electrons), covalent bonds are most likely to occur. Because both atoms have the same affinity for electrons and neither has a tendency to donate them, they share electrons in order to achieve octet configuration and become more stable. </span>
The activation energy in the
diagram is 43.8 kcal/ mole, letter C. You have to note that activation energy
is the energy needed for the reaction to occur and produce products. Therefore,
the spike after H2 and I2 is reacted is the activation energy of the reaction.
Answer:color change, formation of a precipitate, formation of a gas, odor change, temperature change.
Explanation:
