2) fluorine (f), boron (b), and lithium (li) are all in the same period, but are in different groups,
higher electronegativity than boron, which has a higher electronegativity than lithium (f = 398,
0.98. however, boron has a higher melting point than both fluorine and thum, and thym's
m
higher than that of fluorine (f = -220°c, b = 2300°c, - 180°c)
200,-
po
e
using your knowledge of periodic trends and the information above, describe the nature of the period
trends for electronegativity and melting point

Which statement best explains why an object weight less on mercury than it does on earth

Modify the equation fδt=δ (mv) to find the force of friction.

Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?