Read the following description of a sample of gas and identify the pressure, volume, temperature and number of particles of the gas. 0.25 mol of neon is at 256 mmHg and at a temperature of 35º C. The volume is 19,000 ml

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

Compare and contrast the bohr model and the electron cloud models of the atom.