Atomic emission experiments of a mixture show a calcium line at 422.673 nm corresponding to a transition and a doublet due to potassium 2P3>2 and : 2S1>2 For the sodium 3p 2P3>2 ¡3s 2S1>2 transition, n0 = transitions at 764.494 and 769.901 nm, respectively. a. Calculate the ratio for each of these transitions. b. Calculate for a temperature of 1600°C for each transition.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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~ trueboss72

they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

bioteacher101