Does it matter which of the two sp3sp3 hybrid orbitals are used to hold the two nonbonding electron pairs

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

How many grams of mgbr2 are needed to produce 75g or metal?

Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.