the answer is b it is composed of protons and neutrons.
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Answer:
Weathering, Erosion
Explanation:
Plants and animals can be agents of mechanical weathering. The seed of a tree may sprout in soil that has collected in a cracked rock. As the roots grow, they widen the cracks, eventually breaking the rock into pieces. Over time, trees can break apart even large rocks.
Tree root systems have a handful of large roots that branch out into a network of smaller roots that often extend out far beyond their branches do. These root systems prevent erosion by holding the soil in place and improving drainage which helps water get absorbed into the soil instead of just running over the top.
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Answer:
Periodic Properties of the Elements
Atomic Radius.
Ionization Energy (ionization potential)
Electron Affinity.
Electronegativity.
Metallic Character.
Other Trends.
Redox Potentials. Oxidation Potential. Reduction Potential.
Uses in knowing the Periodic Properties of Elements
Explanation:
Answer:
Hey mate....
Explanation:
This is ur answer....
<em>1) All matter is made of atoms. Atoms are indivisible and indestructible. </em><em>3) Compounds are formed by a combination of two or more different kinds of atoms. 4) A chemical reaction is a rearrangement of atoms.</em>
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According to Aufbau principle, orbitals are filled in the increasing order of energy . That is the orbitals having lower energy will fill first. So 1st filling of 1s orbital takes place then 2s then 2p , 3s , 3p and after that 4s and follows 3d.
So d- orbital will be filled when all these orbitals are fully occupied. That is when 1s, 2s , 2p , 3s , 3p and 4s are fully filled with electrons then filling of electrons takes places in 3d orbital. However there are cases in which 4s orbital will take electron after 3d orbital in caeses of half filled or fully filled orbitals.
