Which of the following molecules does not have a geometric isomer? Which of the following molecules does not have a geometric isomer? MX3Y3 (octahedral shape). A central metal atom is bonded left into and out of the page and right into the page to X, and above, below, and right out of the page to Y. MX4Y2 (octahedral shape). A central metal atom is bonded right into and out of the page and left into and out of the page to four Xs, and above and below to Y. MX3Y (tetrahedral shape). A central metal atom is single bonded to three Xs above and right into and out of the page, and left to Y. MX2Y2 (square planar shape). A central metal atom is single bonded right to two Ys and left to two Xs.

water is used to store them because it would keep the radiation from getting out in the open and causing harm to the workers

most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).

i think it's letter a.

the answer is c.the valence of the atoms combine .