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As you move across a period, from left to right, both the number of electrons and protons of a neutral atom increase. The increasing number of protons and electrons cause a greater attration between the nucleus (that contains the protons) and the electrons. This increased attraction pulls electrons closer to the nucleus, thus decreasing the size of the atom. Whereas, moving down a group, the number of energy levels increase. The increased number of energy levels cause the atom to become greater in size inspite of the increase in protons. The protons in the outermost energy levels are attracted to the nucleus, but the attraction is less because of the increase in distance from the nucleus.
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As you move across a period of the periodic table from left to right what happens to the number of protons contained by each element?
The number of protons contained by each element increases by one as you move across a period of the periodic table from left to right. This is because each element in a period has one more proton in its nucleus than the element before it.
Does atomic density increase or decrease as we go across in a period?
It decreases across a period. Since the atomic number increases, so does no. of protons and electrons. This makes the electrostatic force of attraction between electrons larger and hence the atom shrinks a bit. This makes the radius smaller.
Why nuclear charge increases when atomic number increases across a period?
As you move across a period, the atomic number increases because more protons are added to the nucleus. This increase in protons leads to a greater positive nuclear charge, as protons are positively charged particles. The increased nuclear charge exerts a stronger attraction on the electrons in the outermost energy level, resulting in a greater effective nuclear charge felt by those electrons.
Why do atoms get smaller across a period?
Atoms get smaller across a period because the increasing number of protons in the nucleus pulls the electrons closer to the nucleus, resulting in a stronger attraction and a smaller atomic size.
What is is the trend across a period?
The trend across a period refers to how a property of elements changes as you move from left to right across a row in the periodic table. For example, in terms of atomic size, the trend across a period is generally a decrease due to the increasing number of protons in the nucleus pulling the electrons closer.
How do elements changes as you across the periodic table?
the number of protons increases
As you move across a period of the periodic table from left to right what happens to the number of protons contained by each element?
The number of protons contained by each element increases by one as you move across a period of the periodic table from left to right. This is because each element in a period has one more proton in its nucleus than the element before it.
Does atomic density increase or decrease as we go across in a period?
It decreases across a period. Since the atomic number increases, so does no. of protons and electrons. This makes the electrostatic force of attraction between electrons larger and hence the atom shrinks a bit. This makes the radius smaller.
Does the generation of proton gradients across membranes occur in both potosynthesis and respiration?
Yes, the generation of proton gradients across membranes occurs in both photosynthesis and respiration. In photosynthesis, protons are pumped across the thylakoid membrane during the light reactions. In respiration, protons are pumped across the inner mitochondrial membrane during the electron transport chain.
The movement of protons during ATP production is called what?
The movement of protons during ATP production is called chemiosmosis. In this process, protons are pumped across a membrane, creating an electrochemical gradient that drives ATP synthesis.
The actual transport of protons by the proton pump is mediated by a transmembrane protein which undergoes a change in its?
conformation during the transport process. This conformation change allows the protein to alternately bind and release protons on opposite sides of the membrane, resulting in the movement of protons across the membrane against their concentration gradient.
Why is the membrane impermeable to protons?
The membrane is impermeable to protons because it contains specific proteins called proton pumps that actively transport protons across the membrane. This selective transport mechanism helps maintain the balance of protons inside and outside the cell, which is crucial for various cellular processes.
What ion is pumped across the inner membrane in the ETC?
Protons (H+ ions) are pumped across the inner mitochondrial membrane during electron transport in the electron transport chain (ETC). This creates a proton gradient that is used to generate ATP via ATP synthase.
Why are protons (H) pumped across the inner mitochondrial membrane?
Protons (H) are pumped across the inner mitochondrial membrane to create a proton gradient, which is used to generate ATP through a process called oxidative phosphorylation. This ATP is the main source of energy for the cell.
What happens to the periodic properties as you move across a period?
the mass increases, protons and electrons increase as well
Is it possible to have a triple rainbow across the sky?
no
Is a 16oz mixed grill the cooked weight or raw?
Meat is usually weighed when it's raw to get a more uniform form of measurement across the board. Meat shrinks when it's cooked.
