¿Cómo cambian las propiedades de los óxidos al avanzar de izquierda a derecha a lo largo de un periódo? ¿Y de arriba abajo en un grupo específico?

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

Nonmetal halogen family atmoic mass 35

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %