What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons? Why is atomic mass unit of an atom never an whole number? What is fermium's atomic mass number? How is the atomic mass of an element calculated?
What chemical element has 4 protons? What is the chemical symbol for copper? What chemical element is Y? Which element has an atomic number of 79? Which element has the atomic number 9? Which element has an atomic number of 76?
(b)State what is meant by the terms(i) element,(substance that) cannot be split up/ broken down into (two or more) simpler substances by chemical means1...OR(substance) made of atoms with the same atomic number/ number of protons/ proton number.on number... [1](ii) compound,(two...
Protons have arelative massof 1, which is the same as the relative mass of neutrons. Thenumber of protons in an atomis called the 'Atomic Number' of that atom and is sometimes referred to as 'Z'. This is important because itdefines the type of atom, i.e. whichelementit is an atom...
Helium-3 is an isotope of helium that has tremendous potential for use in practical energy applications. Remember, an isotope is a form of a chemical element that has the same number of protons in its atomic nucleus but a different number of neutrons. ...
Z =atomic number = number of protons in the nucleus = number of electrons orbiting the nucleus; A = mass number = number of protons and neutrons in the most common (or most stable) nucleus. What group is CA in? calcium (Ca), chemical element, one of the alkaline-earth metals ofGroup...
An atom has three types of very tiny particles called protons, neutrons and electrons. The center of an atom is called the nucleus, and it is made up of protons and neutrons. The electrons in an atom fly around and above the nucleus in a cloud-like formation. The protons have a positiv...
结果1 题目 C.What Would Happen If Every Element On The Periodic Table Came Into ContactSimultaneously?There are two ways to go about testing this, neither of which are practical. One requires the energyof dozens of Large Hadron Colliders(强子对撞机). The other could produce a large pot ...
What do you call an atom that has more protons than electrons? What is the definition of an atom? What are the two main parts of an atom of an element? What are the three components of an atom of an element? What is the charge of the nucleus of element 89? What was the Bohr mod...
© Boardworks Ltd 2007 1 of 44 What is the atomic number? Every element has a unique atomic number. This is the number of protons in the nucleus of each atom. What is the atomic number of this helium atom? A neutral atom must have equal numbers of protons and electrons, so the ...