Answer:
C.
Explanation:
The electronic configuration of N (7 electrons): 1s² 2s² 2p³.
The orbital 1s is filled with two electrons and their spinning direction is opposite and also electrons of 2s.
3p contains (3 electrons) should fill the 3 orbitals firstly. Every orbital contains 1 electron and be in the same spin direction.
So, the right choice is c.
A is wrong because 2 electrons of 3p are paired in the first orbital before filling every orbital.
B is wrong because the 2 electrons of 1s and 2s are in the same direction and also 2 electrons of 3p are paired in the first orbital before filling every orbital.
D is also wrong the 2 electrons of 1s and 2s are in the same direction and the electron in the second orbital of 3p are in opposite direction of the other 2 electrons.
Hey There!
Assuming the part of the round flask containing liquid to be perfect sphere, we can calculate it's volume.
Given diameter of sphere = 24 cm
Therefore radius of the sphere, r= 24/2= 12 cm
Volume of the sphere of diameter 24 cm = (4/3)*pi*r³ = 7,238.23 cm3
Conversion of cm³ to L
1 L= 1 dm³
1 dm = 10 cm
Therefore 1L= 1 dm³ = 1000 cm³
So the volume of liquid in the round flask = 7.24 L( round of to nearest 0.01 L)
I’m going to assume here that you meant “plants”.
Animals rely on plants as a source of food. Herbivores way plants to survive and carnivores eat the herbivores to live.
Now plants rely on animals because their scat fertilizes the plants, helping them grow and survive longer.
An element can be represented symbolically in terms of its atomic number and mass number as:
_{Z}^{A}\textrm{X}
where X = symbol of the element
A = atomic mass
Z = atomic number
In this case we have the representation as:
_{0}^{1}\textrm{n}
where n = symbol for neutron
mass number of neutron = 1
charge/atomic number of neutron = 0
Ans: D) A neutron of zero charge and one unit mass
It's the balance of chemical equation.
