What did Rutherford discover about the structure of an atom? Which part of an atom is positively charged, and which part is negatively charged? What will an atom do if it has 1 to 3 valence electrons? Which element has 16 neutrons, 15 protons, and 15 electrons?
An atom that has more protons than electrons is called a cation. Ions are charged atoms or combinations of atoms. When an atom loses one or more...Become a member and unlock all Study Answers Try it risk-free for 30 days Try it risk-free Ask a question Our experts can answer your...
2. Calculate Total Electrons: - The first shell can hold 2 electrons. - The second shell can hold 8 electrons. - The third shell has 7 electrons. - Therefore, the total number of electrons is calculated as: 2+8+7=17 electrons 3. Determine Atomic Number: - For a neutral atom, the...
An element has electronic configuration 2, 8, 3. What is the atomic number of the element ? To which (i) group and (ii) period does this element belong ? View Solution An element has 2 electrons in the M shell. What is the atomic number of the element ?
What changes when an ion is made from an atom?A:the number of electrons onlyB:the number of neutrons onlyC:the number of protons onlyD:the number both of protons and of neutrons 相关知识点: 试题来源: 解析 A 考查实际运用。A. 仅电子数量(变化),B. 仅中子数量(变化),C. 仅质子数量(变化...
The atomic number of an atom is equal to the number of protons found in the atom's nucleus. The mass number of an atom is the total number of protons and neutrons in the nucleus of the atom. Thus, the atomic number is also a contributing factor in the ...
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...
Since an atom contains equal number of protons and electrons, it has no overall charge: the positive charges on all the protons are exactly balanced by the negative charges on all the electrons. But sometimes an atom can gain or lose an electron to become what's called an ion. If it ...
A Magnesium Ion typically refers to Mg^2+, formed by losing two electrons. In Magnesium chloride, each Magnesium atom forms a Mg^2+ ion. 11 Magnesium Atom The atomic number of a Magnesium Atom is 12. A Magnesium atom has 12 protons in its nucleus. 11 Magnesium Ion Often found in ionic...
of the mass of a single carbon-12 atom, at rest. The protons and neutrons of the nucleus account for nearly all of the total mass of atoms, with electrons and nuclear binding energy making minor contributions. Thus, the numeric value of the atomic mass w...