Aneutral atom possesses an atomic number of 15 and an atomic mass of 31. three electrons are gained. what is the result of this conversion?

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

Label a-f based on the table using c for concentrated and d for dilute

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols