How do you account for the fact that, although potassium is placed after argon in the periodic table

How do you account for the fact that, although potassium is placed after argon in the periodic table,

it has a lower relative atomic mass? What is the evidence that the aufbau principle is only approximately true? The first list in the table opposite contains symbols or phrases, each of which has a ‘partner’ in the second list. Match the ‘partners’; there is only one match for each pair of symbols or phrases.

Suggest explanations for the following. (a) High values of ionization energies are associated with the noble gases. (b) The enthalpy changes associated with the attachment of the first and second electrons to an O atom are exothermic and endothermic, respectively. (c) In an Li atom in its ground state, the outer electron occupies a 2s rather than a 2p orbital.

find the cost of your paper

Calculate p(0) such that p(y) is normalised.

A PCM transmitter sends out a 12-bit serial digital signal with 5 V corresponding to a 1 and 0 V corresponding to a 0. The signal passes over a transmission….

estimate the probable number of errors if 1600 bits of information are transmitted.

Ten measurement signals are input to a multiplexer so that each one is sampled twice per second. The multiplexed signal is input to a serial digital transmitter incorporating a 10-bit….

Calculate the cost per equivalent unit of material and conversion cost for January

Calculate the cost per equivalent unit of material and conversion cost for January – using the Weighted Average Approach Units Materials Conversion Work in process January 1 2,500 50% 35%….