Planets like, mercury, venus earth: they are in the increasing order of there masses. however this chain breaks at mars.
Planets like, jupiter, saturn, uranus, neptune are arranged in decreasing order of there masses.
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The alkali metals in group l of the periodic table all have a single electron in the outermost shell. These metals form covalent bonds with for example the halogens, which have 7 electrons in their outer shell.
When the alkali metal halide, such as KCl is dissolved in water, it dissociates into ions. The K atom loses the single electron, and therefore has a positive charge. In turn, the chloride atom gains the electron and becomes the negatively charged chloride ion.
This answer should be A !
If i am not mistaken , the answer is C
Answer:
The flowers float on the surface of the pond. Suggest one way these colourful floating flowers help the water lily to reproduce. (e) When water lilies cover the pond surface with leaves, the pond does not get as hot during the day.
