Answer: d) The atomic number decreases by 2
Explanation:
A particle alpha is He(2+)
Where we have:
A = 4
Z = 2
The atomic number, the number of protons, must be conserved:
At the beginning (before the emission) we have Z protons.
After the emission, we will have an element with an atomic number X , and an alpha particle with an atomic number = 2.
Then the total number of protons after the emission is X + 2.
The conservation equation is:
Z = X + 2
Isolating X we get:
X = Z - 2
Then after the emission, the atomic number is decreased by 2.
The correct option will be:
d) The atomic number decreases by 2
Answer:
Not be changed
Option: D
<u>Explanation:</u>
The physical quantity which has both ‘magnitude and direction’ is called vector. These vectors are represented by a line and an arrow, <em>the line represent the magnitude and arrow represent the direction of the physical quantity</em>. The vectors are added and subtracted according to the direction of the vectors.
According to the vector law addition while adding vectors direction and length of the vector is not be changed.<em> If the length of the vector changed the magnitude is also changed while so, while adding vectors length must not be changed.
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Photosynthesis's products are the reactants for cellular respiration. Photosynthesis equation: 6CO2 + 6H2O+ light ->C6H12O6 + 6O2. Then basically swap it and instead of light out in energy: C6H12O6 + 6O2 -> 6CO2 + 6H2O + Energy. Hope this helps!