Answer:
The acceleration of the electron is 1.457 x 10¹⁵ m/s².
Explanation:
Given;
initial velocity of the emitted electron, u = 1.5 x 10⁵ m/s
distance traveled by the electron, d = 0.01 m
final velocity of the electron, v = 5.4 x 10⁶ m/s
The acceleration of the electron is calculated as;
v² = u² + 2ad
(5.4 x 10⁶)² = (1.5 x 10⁵)² + (2 x 0.01)a
(2 x 0.01)a = (5.4 x 10⁶)² - (1.5 x 10⁵)²
(2 x 0.01)a = 2.91375 x 10¹³
Therefore, the acceleration of the electron is 1.457 x 10¹⁵ m/s².
Explanation: The atoms attain the configuration of inert gas by sharing electrons.
Lets take an example of HCl,
Atomic number of H is 1 and it has only 1 valance electron. whereas atomic number of chlorine is 17 and it has 7 valance electron.
When hydrogen atom combine with chlorine atom then they share electrons through covalent bonding in order to complete their octet.
According to figure,
Electronic configuration of H = 1
Electronic configuration of Cl = 2,8,7
Now, after share of electron
Electronic configuration of H = 2
Electronic configuration of Cl = 2,8,8
Hence, we can conclude that when atoms share electrons then their octet gets complete and atoms achieve noble gas electronic configuration.
Answer:531250J
Explanation:
Answer:
person must have to use the concave lens of focal length 3.5 m
Explanation:
If the person can see upto distance of 3.5 m from eye
then in order to see the object at large distance we need to use
so by lens formula we have
so we have
f = -3.5 m
so person must have to use the concave lens of focal length 3.5 m