Which statement describes the energy and bonding changes as two atoms of fluorine become a molecule of fluorine? 1
Energy is absorbed as a bond is broken.
2
Energy is absorbed as a bond is formed.
3
Energy is released as a bond is broken.
4
Energy is released as a bond is formed.

Statement that gives description as regards energy and bonding changes between atoms such as fluorine become a molecule of fluorine is : 4:Energy is released as a bond is formed.

Therefore, option 4, is correct.

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n has four pairs of electrons in the valence shell, electrons repel one another ,n has 7 protons in its nucleus, and since n has 7 protons, it must fill the second shell, giving it 4 pairs of electrons. the electrons form 3 bonds and 1 lone pair of electrons. each pair of electrons repels the other pairs, so they are equally far apart.

so all of the above

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?