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Why does the angle of deviation of a prism decreases first and then increases?
Wiki User
∙ 11y ago
As the angle of incidence is increased, angle of deviation 'd' decreases and reaches minimum value. If the angle of incidence is further increased, the angle of deviation is increased. Let dm be the angle of minimum deviation. The refracted ray in the prism in that case will be parallel to the base.
Wiki User
∙ 11y ago
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What happens to the reactivity of a nonmetal when you move from left to right in a group?
The reactivity of a non metal decreases as you move down a group. This is because the size of the atomic radius increases and when the distance to the nucleus increases, the force of attraction decreases. Electrons are not pulled as strongly to larger atoms, and so larger atoms are not as reactive.
Why does density of water below 0 degree Celsius first decreases then increases?
First decreases then increases ... as what changes, exactly? The point of maximum density for liquid water occurs at 3.98 degrees Celsius. This is mainly due to some semi-complicated effects from hydrogen bonding, which is stronger in water than in nearly any other substance.
What is the Trend in first ionization energy across a period?
As one proceeds down the group 7A elements, the first ionization energy decreases. this means that the outermost electron is more readily removed as we go down a group.
What does the horizontal placing of the elements in the periodic table signify?
It signify the group of the element. For example, the first group is called alkali metals. When it is moving from left to right of the periodic table, the atomic radius decreases, the ionization energy increases, and the electronegativity increases.
What is ionization energy of boron?
Across a row on the periodic table ionization energy increases. Down a column, ionization energy decreases. --------------------------------------------------------- The first Ionization energy of Boron is 800.6 kJ mol-1
As you go from left to right across a period the first ionization energy generally decreases or increases?
increases.
What happens when inventory in base year dollars decreases?
Last in First out reserve increases
What is the trend found in Period 3 on the Periodic Table as the elements increase in atomic number?
1-Atomic size = decreases 2-Ioniztion energy = increases 3-Electronegativity = increases (except Argon) 4-Metallic character = decreases 5-Melting point = first increases then decreases
What happens to the reactivity of a nonmetal when you move from left to right in a group?
The reactivity of a non metal decreases as you move down a group. This is because the size of the atomic radius increases and when the distance to the nucleus increases, the force of attraction decreases. Electrons are not pulled as strongly to larger atoms, and so larger atoms are not as reactive.
What are the stages if development organisms go through as they grow and develop?
At first body mass increases and then decreases.
Why does density of water below 0 degree Celsius first decreases then increases?
First decreases then increases ... as what changes, exactly? The point of maximum density for liquid water occurs at 3.98 degrees Celsius. This is mainly due to some semi-complicated effects from hydrogen bonding, which is stronger in water than in nearly any other substance.
What happens as we move down columns on the periodic table?
As you move down a column (group) in the periodic table, the electronegativity decreases, the ionization energy decreases, the electron affinity decreases, and the atomic radius increases.
When temperature increases resistance increases and conduction decreases why is this is so?
Generally when temperature increases, resistance increases and conduction decreases in metals. In semiconductors, this is generally inverted. First, when temperature increases, the molecular activity of the material increases, making the energy (and activity) of the atoms to be higher. This can make it more difficult for the electrons to participate in the cascade effect that we call electric current, hence increased resistance. Second, conductance is defined as the inverse of resistance; if resistance goes up, then conductance goes down, and vice versa.
What is the Trend in first ionization energy across a period?
As one proceeds down the group 7A elements, the first ionization energy decreases. this means that the outermost electron is more readily removed as we go down a group.
What is the general trend of ionization energy as you go across the periodic table?
Across a period, first ionization energy increases. However, when going down a group, first ionization energy generally decreases. As you go down a group, atoms hove more total electrons so they don't really care that much about their outermost ones.
What does the horizontal placing of the elements in the periodic table signify?
It signify the group of the element. For example, the first group is called alkali metals. When it is moving from left to right of the periodic table, the atomic radius decreases, the ionization energy increases, and the electronegativity increases.
What is absolute mean deviation of first 50 digits of pi?
The mean deviation of any set of numbers is always zero and so the absolute mean deviation is also always zero.
