Write the chemical symbols for three different atoms or atomic cations with 21 electrons.

Q: Consider this ionic isotope. The identity of the element is missing. 35 22- 16 Which three…

A: We have to choose the identity of the missing elements from the given options.

Q: Identify these elements based on their locations in the periodic table. Give the symbol, not the…

A: We can solve the given question and can find the elements by clearly observing the groups and…

Q: Fill in the following table about atomic number, mass number, protons, neutrons, and electrons for…

A:

Q: What THREE elements are rare-earth elements? calcium neodymium rhenium niobium samarium thallium…

A: In the above question the elements which are rare earth metal  among the option provided are…

Q: Read each description in the first column of the table below. If any chemical element with atomic…

A: Periodic table is the arrangement of elements in the order of atomic number. The arrangement is done…

Q: Choose all of the following that have a positive charge. 000 cations anions atoms protons electrons…

A: Atoms is an neutral particle that consist of three basic particles: protons, electrons &…

Q: The diagram below depicts a lithium atom with three protons and four electrons. Calculate the charge…

A: Lithium belongs to group 1. The atomic number of Li is 3 and it's electronic configuration is 2,1.

Q: Write isotopic symbols in the form zXA for each isotope. the argon isotope with 22 neutrons

A: Different forms of same element which have different mass number (A) and same atomic number (Z).…

Q: The newly discovered element Nh (Nihonium), with atomic number 113, would be a member of which…

A: Atomic number of this newly discovered element Nihonium (Nh) is 113. In the periodic table, period…

Q: Write the chemical symbol for an element belonging to each of the element families in the table…

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Q: Determine the element symbol, mass number, and charge for an atom or ion that has a 51 neutrons, 38…

A: Given: neutrons=51protons=38electrons=36 To determine: Element symbol Mass number Charge of atom

Q: How many electrons are contained in an ion formed from an atom of Ga?

A: An atom is mainly composed of three sub-particles; electrons, protons and neutrons. These particles…

Q: How do you write the chemical symbols for three different atoms or atomic cations with 21 electrons.

A: The below are the atoms and ions containing 21 electrons,Sc:Atomic number of Sc is 21, which means…

Q: 4. Lead 210 is a radioactive isotope of lead. It is a beta emitter. In the radioactive decay process…

A: We have to assume that each radioactive species has 82 electrons. No. Of electrons = No. Of protons…

Q: Is the statement consistent with Rutherford’s nuclear theory as it was originally stated? Why?…

A: The basic unit of matter is called atom. Various theories were given to explain structure of atom.…

Q: Write a isotope symbol for An ion with 17 protons, 18 electrons, 20 neutrons

A: Isotopes of an atom have same number of protons but differ in the number of neutrons, so isotopes…

Q: Give the atom or the atomic number of the term ³P0

A: Apply formula (2s+1)LJ

Q: An element has an atomic number of 35. If an atom of that element is in a form wherein it has a…

A: The given element has atomic number 35. If the element has -1 charge, it means that there is…

Q: An element has a mass number of 20, it has 9 neutrons and has lost an electron. Write the isotope in…

A: Concept based on the mass number of an isotope, writing out the electronic configuration of ions and…

Q: Group the elements into pairs that would most likely exhibit similar chemical properties. It does…

A: Chemical properties of any element depends on the number of valence electron the element is having.…

Q: Give 3 examples of minerals that forensic geologists commonly encounter in soil samples. Give the…

A: Soil contains many essential minerals that are used in further technologies. These minerals are…

Q: elements as a metal, non metal or metalloid

A:

Q: How can the periodic table be used to determine the number of valence electrons of a given element?…

A: The groups of the periodic table indicate the number of valence electrons of a given element. For…

Q: What is the chemical symbol of the element found in the 4th family and 5th period of the periodic…

A: Fourth family is called carbon family. The element present in fifth period of fourth family is Tin.…

Q: For each of the following chemical symbols, determine the number or element symbol that goes in the…

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Q: Which of the following is correct if an atom is neutral (has no net charge), has an atomic number of…

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Q: Write isotopic symbols in the form zXA for each isotope. The copper isotope with 34 neutrons

A: It’s explained below:

Q: Sketch an atom (not to scale) of boron-12, using p for protons, n for neutrons, and e for electrons.…

A: This problem is based on atomic structure chapter . Here we will be discussing about the radioactive…

Q: Define both the Greek atomic theory and the modern day theory of atoms. How does the Greek atomic…

A: The Greek assumption of atoms with different shapes wasn't based upon any empirical evidence but on…

Q: Potassium has an atomic number of 19 and an atomic mass of 39 (ignore the possibility of isotopes…

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Q: Naturally occurring iodine is iodine-127.  Medically, radioactive isotopes of iodine-125 and…

A: If   XZA is the chemical element for an isotope thenA is the mass number A = number of protons +…

Q: What does the ‘Symbol’ tell you about what particles are in an atom or ion?

A: An atom is in solid,liquid or gas satate  Like as  Na(g) Li(g)  While for ion aqueous is mention…

Q: Describe the difference between an atom and ion.

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Q: Name the element which has 26 electrons, 29 electrons, 26 protons

A: General way of element presentation:. AxZ where z is no. Of protons A is no. Of neutrons+protons

Q: More than one may apply An atom that differs in charge from another atom of the same element: has…

A: We know that, Atom when gain or loss electron then form ions. Thus,

Q: What is the atomic number of the element? What is the atomic mass of the element? What is the number…

A: Given, Ra having +1 charge . So, now it is not a neutral atom. It becomes a cation having +1 charge.…

Q: Complete the following table for the element Xenon (Xe): Atomic Weight Atomic # # of protons # of…

A: Xenon a chemical element present in the periodic table which is heavy gas and called as noble gas.…

Q: The ion with 91 electrons, 148 neutrons, and a 4+ charge

A: Given: No. of electrons = 91 No. of neutrons = 148 Charge = +4

Q: A neutral isotope has a mass number of 6565 and 3636 neutrons. Identify the element symbol of this…

A: * Atomic number = Number of protons * Mass number =  Number of protons + number of neutrons  * For…

Q: Of the follOV ng statements Is correct about the periodic law? Properties of elements are periodic…

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Q: If an atom has 18 electrons, how many protons does it have?

A: An atom constitutes of electrons, protons and neutrons. The nucleus of atom contains proton and…

Q: Name the three fundamental particles of an atom. DIfferentiate each.

A: It is asked about the three fundamental particles of an atom

Q: The table compares some characteristics of two atoms. (PLEASE ANSWER QUICKLY

A: Answer: Atom 'X' is in a column to the right of atom 'Y' on the periodic table. . Explanation:…

Q: Classify each of the following as a metal, nonmetal, or metalloid.   arsenic argon calcium plutonium

A: Arsenic is element of p-block and considered as metallic. Argon is noble gas and classified as…

Q: An ion has a mass number of 65, 36 neutrons, and a charge of +1 . Identify the element symbol, and…

A: According to question  Mass number = 65  No. Of neutrons = 36  So, No. Of protons = Mass number -…