Element X contains 4 electrons in its outer shell and 125 neutrons in its nucleus. what is element X? (beryllium/carbon/tin/lead)​

lead

Explanation:

As it is in group 4 so 4 electron In its outer shell

and you can find number of neutrons by taking

mass number - atomic number

207.2-82=124.2=125

hope it make sense:)

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.