1. La configuración electrónica del elemento Z 13 es: A. 1s2 2s2
B. 1s2 1s2 1p6 3s1
C. 1s2 1p4 1d5
D. 1s2 2s2 2p6 3s2 3p1

One significant difference between an ionic bond, where electrons are taken from one atom and added to another atom, and a covalent or metallic bond, where electrons are shared is

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?