Answer:
All groups have the same number of valence electrons.
Explanation:
groups are the columns.
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➷ An isotonic cell has the same concentration inside the cell as the outside solution. This would mean there is no net movement of water. Isotonic cells are sometimes called 'normal'
Hypertonic cells have a higher water concentration inside the cell than outside the cell. This causes water to move out of the cell and make the cell shrivel.
Hypotonic cells are the opposite of hypertonic cells. They have a lower water concentration inside the cell than outside. This causes water to move into the cell and make the cell bloat.
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A covalent bond is the sharing of two electrons. Therefore, in a double covalent bond, where there are two covalent bonds, 4 electrons are shared. So the answer is (4)
Answer:
ionic
Explanation:
In NH4Cl molecule, ionic bond is formed between NH4+ and Cl– ions, 3 covalent bonds are formed between N and three H atoms and one coordinate bond is formed between N and 1 H atom.
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