Answer:
Strontium
Explanation:
To find the element, we need to know the atomic number. There is this rule in chemistry that says that the number of protons and the atomic number are the same. Since we know that there are 38 protons, the atomic number is also 38, leading us to Strontium. Sr -- element symbol.
The mass number is located below the element symbol on a periodic table. The mass number or the atomic mass for Strontium is 87.62 u.
Since there are an uneven amount of protons and electrons, let's subtract the number of electrons from the number of protons to find the difference. 38-36 = 2. (Also, protons are positive and electrons are negative, meaning there are more + than - in the ionic charge). Which means, the atom has a +2 ionic charge.
Answer:
The answer to your question is Yes, it is a double replacement reaction
Explanation:
General equation of a double replacement reaction
AB + CD ⇒ AD + BC
In a double replacement reaction, the cation of a compound is interchanged with the cation and another compound and also the anions are interchanged. The reaction given has the characteristics of a double replacement reaction.
Answer is: hydrogen (H).
Main sequence stars fuse hydrogen atoms to form helium atoms in their cores.
About 90 percent of the stars in the universe are main sequence stars.
Nuclear reaction is in the inner core of the Sun and hydrogen is conveted into helium.
The inner core is the central region of the Sun and all solar energy is produced in the core by nuclear fusion.