Ahelium atom has 2 protons and 2 neutrons. what is the mass number of this atom?

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro

What are the coefficients that will balance the skeleton equation below? n2 + h2 → nh3

1. true or false: minerals are inorganic. true false 2. inorganic means that something has never been found alive 3. halite is another name for and is a mineral with a cubic crystal pattern. table salt rock salt