Answer:
The elements in the periodic table are arranged in order of increasing atomic number. 
Explanation:
 
        
             
        
        
        
 Answer:
151200 minutes. 
Explanation:
From the question given above, the following data were obtained:
Time (in week) = 15 weeks 
Time (in min) =?
Next, we shall convert 15 weeks to days. This can be obtained as follow:
1 week = 7 days
Therefore, 
15 weeks = 15 weeks × 7 days / 1 week
15 weeks = 105 days 
Next, we shall convert 105 days to hours. This can be obtained as follow:
1 day = 24 h
Therefore,
105 days = 105 days × 24 h / 1 day
105 days = 2520 h
Finally, we shall convert 2520 h to mins. This can be obtained as follow:
1 h = 60 mins
Therefore, 
2520 h = 2520 h × 60 mins / 1 h
2520 h = 151200 mins 
Thus, 15 weeks is equivalent to 151200 minutes. 
 
        
             
        
        
        
If you go backwards two elements, you will find Neon (Ne). If you go forwards six, you will find Argon (Ar).      	so the closest will be neon
        
             
        
        
        
Answer:
H2O<en<phen
Explanation:
The degree of d- splitting is observed from the intensity of colour. The order of d splitting from least to greatest is H2O<en<phen. Phen shows the greatest d-splitting. The degree of splitting of d- orbitals by ligands depends on their relative positions in the spectrochemical series. The spectrochemical series is an experimentally determined series. The series separates the ligands into strong field and weak field ligands. Strong field ligands are found towards the end of the series. Strong field ligands such as en and phen can participate in metal to ligand or ligand to metal pi-bonding. Hence they cause more d-splitting. Ethylendiamine and phenanthroline occur towards the end of the spectrochemical series hence the higher order of d-splitting.
 
        
             
        
        
        
The bond is polar covalent because the difference in electronegativity is greater than 0.4, but  less than 1.7.
Electronegativity refers to the ability of an atom in a compound to attract the electrons of the bond towards itself. It is a periodic trend that increases across the period but decreases down the group.
The electronegativity difference between the two atoms as shown in the question is 1.55. This means that the bond is polar covalent because the difference in electronegativity is greater than 0.4, but  less than 1.7.
Learn more: brainly.com/question/2510654