Which of the following is true of subatomic particles in a nucleus of vanadium-50? a. a. it has 23 protons and 28 neutrons. b. it has 27 protons and 23 neutrons. c. it has 27 protons and 51 neutrons. d. it has 23 protons and 27 neutrons.

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.