What is the atomic number of an element with 9 protons and 10 electrons? What is the atomic number of manganese? a. 25 b. 55 c. 30 d. 80 Distinguish between the atomic number and the mass number of an element. What is an isotope?
An atomic cation with a charge of +1 has the following electron configuration: (Ar) 4s^2 3d^{10} 4p^1. What is the chemical symbol for the ion? What is the symbol for the ion with 9 protons and 10 electrons? What is the symbol for the ion with 19 protons and 18 electrons? a....
To determine the number of valence electrons in the atom of an element A with atomic number 20 and to identify its valence shell, follow these steps: Step 1: Write the Electronic ConfigurationThe atomic number of element A is 20, which means it has 20 protons and, in a neutral atom, 20...
Element is a substance that cannot be decomposed into simpler substances. In an element, all the atoms have the same number of protons or electrons, although the number of neutrons my vary.Citing this page: Generalic, Eni. "Element." Croatian-English Chemistry Dictionary & Glossary. 29 June ...
It is part of the non-metal and halogen family. Fluorine is so strong and dangerous that it can burn through human skin. In the periodic table it is element number nine(9). Fluorine has a mass of 18.9984032, it can be rounded to 19. It contains of 9 protons, 9 electrons and 10 ...
The neon element symbol is Ne. It has the atomic number 10. So, in the neon atom, the number of protons and electrons is 10 each. The mass number of neon is 20 amu. So, the number of neutrons in the neon atom is 10.View Video Only Save Timeline Video Quiz Course 26K ...
A neutral atom of element has 2K, 8K and 5M electrons. Find out the following : (a) Atomic No. of the element (b) Total No. of s electrons (c) Total No. of p- electrons (d) No. of protons in the nucleus and (e) Valency of the element. Video Solution Struggling with Structure...
Anelementis a substance that cannot be separated into simpler substances by chemical means. An element consists of anatomwith a unique combination ofprotons,neutrons, andelectrons. For example, the element hydrogen has one proton, one neutron, and one electron. We cannot use chemical methods to ...
What element has 10 electrons?Atomic Number:Each known chemical element listed on the periodic table of elements has an atomic number. The atomic number is equal to the number of protons that are present in one atom of that element.Answer and Explanation: ...
Answer to: Isotopes are atoms of the same element with the same number of protons and a different number of: A. ions B. molecules C. electrons D...