Temperature, Color, Oder, formation of a precipitate, light or heat given off
The location of the valence electron or the outermost electron is expressed in quantum numbers. There are five quantum numbers: prinicipal (n), angular momentum (l), magnetic (ms) and magnetic spin (ms) quantum numbers. This is based on Bohr's atomic model where electrons orbit around the nucleus. These electrons are in the orbitals with specific energy levels. Starting from energy level 1 that is closest to the nucleus, the energy level decreases to 2, 3, 4, 5, 6, and 7. These energy level numbers represent the principal quantum number. Within each orbital also contains subshell. From increasing to decreasing order, these subshells are the s, p, d and f subshells. These subshells represent the angular momentum quantum numer. Specifically, s=0, p=1, d=2 and f=3. Therefore, if the electron is in the orbital 5p, the quantum number would be: 5, 1. Applying these, the correct pairing would be:
2p: n=2. l=1
Answer : The specific heat capacity of lead is, 
Explanation :
In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.
where,
= specific heat of lead = ?
= specific heat of water = 
= mass of lead = 100.0 g
= mass of water = 150.0 g
= final temperature = 
= initial temperature of lead = 
= initial temperature of water = 
Now put all the given values in the above formula, we get
Therefore, the specific heat capacity of lead is,
The number of valence electrons for each molecule or ion is shown beneath the structure. Remember hydrogen will not have more than two electrons. This hydrogen is part of a covalent bond (sharing two electrons). A double bond here would cause hydrogen to share four electrons with phosphorus.
