The electron configuration of an element in its ground state is [Ar]3d104s24p5. This element is in the
period.

How can you use chemical equations to predict the products of the reaction you can carry out?

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true