Answer:
See the answer below
Explanation:
Beryllium forms an ion with 2 electrons in its outermost shell. Hence<u> the charge on the element is 2+</u>, that is, Be2+. In order for Be to form a stable bond with another element, <u>such an element must have a deficit of electrons in its outermost shell</u>. Beryllium will have to donate its 2 electrons to this element for its self-stability.
Answer:
The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
Explanation:
hope that helps
The formula for an isotope of oxygen with nine neutrons, including the mass number and the atomic number is 17/8 O.
<h3>What is an isotope?</h3>
Isotope is any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei.
This means that atoms of isotopes will have the same atomic number but a different mass number.
According to this question, an isotope of oxygen has 9 neutrons. If oxygen has an atomic number of 8, the formula of this particular isotope is as follows: 17/8 O.
Learn more about isotopes at: brainly.com/question/12955625
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Answer:
1. Hot air is less dense then cold air therefore it is lighter the cold air. Because the hot air is less dense it helps lift the balloon up and because cold air is more dense it is heavier and helps the balloon slowly drop the balloon.
To be honest I don't know what 2 is but hope this helps some!