Why does chlorine have 18 neutrons?
An element with 17 protons will always be chlorine. However an element’s mass numbers can vary, which means that it can have different numbers of neutrons. So although chlorine has a mass number of 35 which means it has 18 neutrons, it can also have a mass number of 37, which means it has 20 neutrons.
What element has 18 protons and 22 neutrons?
Name Argon
What has 18 protons and 20 neutrons?
calcium
Which atom has the largest number of neutrons?
livermorium
What is the smallest and lightest subatomic particle?
Electron, lightest stable subatomic particle known. It carries a negative charge of 1.602176634 × 10−19 coulomb, which is considered the basic unit of electric charge. The rest mass of the electron is 9.1093837015 × 10−31 kg, which is only 1/1,836the mass of a proton.
Which element has the largest number of protons?
uranium
Which atom has the largest atomic radius?
francium
What has the smallest atomic radius?
Helium
Which period has larger radius?
Atomic radius is determined as the distance between the nuclei of two identical atoms bonded together. The atomic radius of atoms generally decreases from left to right across a period. The atomic radius of atoms generally increases from top to bottom within a group.
What is the atomic radius of RB?
290 pm
What is atomic radius of hydrogen?
120 pm
Which ion has largest radius?
K+, Cl−, and S2− form an isoelectronic series with the [Ar] closed-shell electron configuration; that is, all three ions contain 18 electrons but have different nuclear charges. Because K+ has the greatest nuclear charge (Z = 19), its radius is smallest, and S2− with Z = 16 has the largest radius.
Is SE or SE 2 bigger?
It has a 4.7-inch display compared to the original’s four-inch screen and the entire phone is almost 30 percent bigger. Sure, the new SE is smaller than the rest of Apple’s current lineup and is smaller than basically any Android phone you can buy now.
Which is bigger Se2 or Br?
The Br− ion is smaller than the Se2− ion because the Br− ion has a larger nuclear charge and more extra electrons than the Se2− ion.
Is RB+ bigger than Se2?
Answer: The answer is “Rubidium Rb+”. Explanation: While moving from left to right in periodic table the nuclear attraction between nucleus and electrons increases and the size decreases.
Why is Br smaller than Rb+?
Br– has 35 protons and 36 electrons. Rb+ has has 37 protons and 36 electrons. The ion with the fewest number of protons attracting the same number of electrons will have the largest radii.