Particle A is projected vertically down from top of tower of height 80 m with velocity 15 m/s. Simultaneous
particle B is projected vertically up from ground with velocity 25 m/s. Find the position at which they will
meet ?
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Answer:
an element belong to period 2 and group to the number of valence electron in the atom of this element is
Explanation:
in the third period of the periodic table the element having the smallest eyes is
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