I. a set of sp2 orbitals can be thought of as one s orbital one-third of the time and two p orbitals two-thirds of the time. ii. a set of sp orbitals can accommodate a maximum of six electrons. iii. the orbitals resulting from sp3d2 hybridization are directed toward the corners of an octahedron. iv. a set of sp3 orbitals results from the mixing of one s orbital and three p orbitals.

I. FALSE

II. FALSE

III. TRUE

IV. TRUE

Explanation:

I. A set of sp² orbitals can be thought of as one s orbital one-third of the time and two p orbitals two-thirds of the time. FALSE. 1 s orbital hybridize with 2 p orbitals to form 3 sp² permanent orbitals.

II. A set of sp orbitals can accommodate a maximum of six electrons. FALSE. sp orbitals, as any orbital, can accommodate a maximum of 2 electrons.

III. The orbitals resulting from sp³d² hybridization are directed toward the corners of an octahedron. TRUE. 1 s orbital, 3 p orbitals and 2 d orbitals hybridize to form 6 sp³d² orbitals, which are directed toward the corners of an octahedron.

IV. A set of sp³ orbitals results from the mixing of one s orbital and three p orbitals. TRUE. 1 s orbital hybridize with 3 p orbitals to form 4 sp³ orbitals.

am i too late?

explanation:

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-