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how do scientists determine the number of neutrons in an isotope of an atom?

they subtract the number of protons from the mass number.

they subtract the number of electrons from the mass number.

they subtract the number of protons and neutrons from the mass number.

they add the number of protons and electrons.

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

Using the periodic table, complete the table to describe each atom. type in your answers

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons