A neutral atom in the ground state of Titanium has its outer most valence electr

Question

A neutral atom in the ground state of Titanium has its outer most valence electron in which orbital? f p s d The shift from excited state to ground state is seen in a relativistic effect the total reflection of light by metals giving them their typical luster the emission of energy by electrically excited gas atoms the darkening of photographic film when exposed to an electric field the ejection of electrons by a metal when struck with light of sufficient energy Which of the following is a correct set of quantum numbers for outermost valence electron in a neutral atom in the ground state of Boron 2, 1, -1 -2, -1, 1 3, 1, 2 3, 1, -1

Explanation / Answer

1)

Number of electron in Ti = 22

Electronic configuration is 1s2 2s2 2p6 3s2 3p6 3d2 4s2

Outer most shell is 4s

Answer: s

2)

shift from higher state to lower state results in emission

Answer: the emission of energy by electrically excited gas atoms

3)

Number of electron in B = 5

Electronic configuration is 1s2 2s2 2p1

So, the outermost electron is in 2p

for 2p, n=2 and l=1

Answer: 2,1,-1

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