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Selenium (Se)
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When an alpha particle is emitted the nucleus of the original element?
An alpha particle is a helium-4 nucleus, and contains two protons and two neutrons. Therefore, the original nucleus will have two protons and two neutrons less. Its atomic number will be two less, and its atomic mass will be 4 less.
Does a isotope of a element have more protons?
All isotopes of an element have the same number of protons, otherwise they would not be the same element. What varies is the number of neutrons, they can be more or less than in the stable isotope(s) of the element.
What has one less than protons than nitrogen?
This chemical element is carbon.
How many protons are in Lead 204?
This is actually a very, very easy question to answer. Now, all atoms of the same element have the same number of protons. Otherwise, they wouldn't be the same element. For instance, if lead had one more proton, it would be bismuth, a non-toxic shiny metalloid. If it had one less, it would be thallium: a deadly poison which was only recently found. Lead has 82 protons. When the number is given by an element name (e.g. lead-204), it is also showing the atom's nucleus' mass number. Natural lead contains lead-204, lead-206, lead-207, and lead-208. Each of these contains the same number of protons, but different numbers of neutrons, hence the mass difference. To find the number of neutrons, N, we subtract the number of protons, Z, from the mass number, A. So, 204 - 82 = 122. Lead-204 contains 122 neutrons.
What is the atomic number and atomic mass of this element?
Atomic number is the number of protons. Atomic mass is (mostly) the sum of the masses of the protons and neutrons (more or less).
What alkaline earth metal has more protons then argon but less protons then krypton?
This chemical element is calcium (Ca).
When an alpha particle is emitted the nucleus of the original element?
An alpha particle is a helium-4 nucleus, and contains two protons and two neutrons. Therefore, the original nucleus will have two protons and two neutrons less. Its atomic number will be two less, and its atomic mass will be 4 less.
What do you call a germanium atom with 2 less protons?
zinc If you change the number of protons, you change the element.
Does a isotope of a element have more protons?
All isotopes of an element have the same number of protons, otherwise they would not be the same element. What varies is the number of neutrons, they can be more or less than in the stable isotope(s) of the element.
Why is magnesium located to the right of sodium in the periodic table?
In amy line accrues the periodic table each step to the right indicates that the element contains one more proton than the element to its left. Nickel has one more proton (28) than cobalt (27) and occupies its proper position.
What has one less than protons than nitrogen?
This chemical element is carbon.
What element has one less proton than gold?
Platinum(Pt) has 78 protons. Gold(Au) has 79 protons
What element has 26 electrons 29 neutrons and 26 protons?
The element that has 26 electrons 29 neuetrons and 26 protons is Iron (Fe) The number of protons= electrons/atomic number
Which element has 20 protons 20 neutrons and 20 electrons?
Calcium has 20 protons and electrons. The symbol for calcium is Ca and its atomic number is 20.
What element has more than 50 but less than 75 protons and is in group 17?
Any one element can ONLY have a single fixed number of protons. Th only element with a number of protons that sits between 50 and 75 in group 17 of the periodic table is Iodine (I), with 53 protons.
Which element has 7 protons and 8 neutron?
Elements are determined by their number of protons. Nitrogen has 7 protons but usually 7 neutrons as well. What you have here is a nitrogen isotope, an element with more or less neutrons than there are protons. Specifically, this is Nitrogen-15.
Why is Krypton called Krypton?
The element Krypton's name derived from the Greek term, Kryptos, meaning hidden/secret/covered. Krypton is a noble gas, meaning it does not usually react to other gasses. It is atomic number 36. Krypton is associated with lights. It is commonly used in fluorescent lights and sometimes neon lights. Less than 1% of the atmosphere is made up of krypton gas.Fun Fact: Krypton is a planet from SUPERMAN:)The element krypton is named after the Greek word κρυπτός(kryptos) meaning "the hidden one".
