Question

galaxy ngc 11510, distance: 5 billion lightyears age: 7 billion years wavelength: 400 nm energy: 3 ev uv 500 nm 2.5 ev blue 600 nm 2 ev green 700 nm 1.7 ev red 800 nm 1.5 ev infrared 1. elements present: carbon / hydrogen 2. circle the heaviest element you listed in number 1 3. draw a neutral atom of the heaviest element below: _ p _ n

Explanation:

Step1: Identify heavier element

Carbon has an atomic number of 6 and hydrogen has an atomic number of 1. Carbon is heavier.

Step2: Draw carbon atom

A neutral carbon atom has 6 protons (P = 6), 6 neutrons (N = 6 considering the most common isotope carbon - 12), and 6 electrons in its electron - shells. The first shell has 2 electrons and the second shell has 4 electrons.

Answer:

1. Carbon, Hydrogen
2. Circle Carbon
3. Draw a nucleus with 6 protons and 6 neutrons. Draw two electron - shells around the nucleus. The inner shell has 2 electrons and the outer shell has 4 electrons.