MCQ
The elements having the electronic configuration, [$Kr$] $4{d^{10}}{f^{14}},\,5{s^2}{p^6}{d^2},\,6{s^2}$ belongs to
- A$s$-block
- B$p$-block
- ✓$d$-block
- D$f$-block
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$(a)$ Heat of combustion reaction
$(b)$ Heat of formation reaction
$(c)$ An exothermic reaction
$(d)$ Not neutralization reaction
$(A)$ $3$ electrons in neutral medium
$(B)$ $5$ electrons in neutral medium
$(C)$ $3$ electrons in alkaline medium
$(D)$ $5$ electrons in acidic medium
$(I)\, SF_4$ $(II)\, OSF_4$ $(III)\, H_2CSF_4$