Un elemento X, posee número atómico 51. El periodo y familia al que pertenece dicho elemento es:

Hey there!

Antimony is the element with an atomic number of 51. The element is in group 15, and in  period 5.

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a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.