How many elements are presently known? About how many occur naturally?

Q: Which statements about subatomic particles are false?a. Protons and electrons have charges of the…

A: Which statements about subatomic particles are false has to be given.

Q: What are subatomic particles?

A: Sub atomic particle, also called elementary particle, any of various self contained units of matter…

Q: 5. In a chemical formula, which element is listed first?

A: In a chemical formula, which element has to be listed first has to be given.

Q: You are an element capable of producing oxygen when fused with you own kind, which element are you

A: Oxygen is a diatomic gas.

Q: Complete the following table: Symbol.               69Ga+3.          ------ # of protons.…

A: Atomic number (Z) = Number of protons. Number of protons = Number electrons ( for uncharged species)…

Q: All the chemical elements may be derived from which single element?

A: All the chemical elements may be derived from one single element. That has to be given below.

Q: (i) What is the mass of a neutron? (ii) What is the charge of a neutron?

A: Neutron is a subatomic particle as like proton. It is found in the nucleus along with proton and it…

Q: Which symbol represents the atom having 28 protons and 34 neutrons in its nucleus?

A: Atomic number: The atomic number (represented by the letter Z) of an element is the number of…

Q: In the first 36 elements, 8 elements have atoms whose average mass is within 0.2 u of being twice…

A: The atomic mass of an element depends on the number of protons and neutrons. The sum of the number…

Q: Characterize elements and their isotopes.

A: Due to the discovery of various elements, it was very difficult to organize and study the…

Q: Copper, which has an average atomic mass of 63.546 amu, has two stable isotopes: copper-63 and…

A: Given,Atomic mass of Copper-63 = 63.546 amuAbundance of Copper-63= 69.15%

Q: Naturally occurring boron is composed of two isotopes. The percent abundance and the mass of each…

A: 6 (B) ANS: Atomic mass=   % abundant x atomic mass +% abundant x atomic mass /100 Atomic mass=  19.9…

Q: Which of the three subatomic particles was discovered first—the proton, neutron, or electron? Which…

A: All matter is composed of atoms and atoms are made up of three subatomic particles- protons,…

Q: Thorium+2 Zinc - 67 Chemical Symbol Atomic Number, Z 30 Mass Number, A 232 # of protons # of…

A: The number of protons in the nucleus of the element is known as the atomic number Z. In a neutral…

Q: An isotope of mercury has 80 protons and 120neutrons. What is the mass number of this isotope?

A: The atom consists of 3 subatomic particles: Protons: They are positively charged particles present…

Q: Which element accounts for roughly 75% of the observed mass of the universe? Which four elements…

A: Hydrogen is the most abundant element in the universe which aaccounts for roughly 75% of the…

Q: Describe the structure of the atom, including the locations of the subatomic particles.

A: The atomic structure means that how and where  the sub-atomic particles are arranged inside the…

Q: Approximately how many elements are listed in the periodic table? How many can be found in nature?…

A: Periodic table of elements is arrangement of elements in tabulated form. In this, the elements are…

Q: Where on the periodic table are the most nonmetallic elements found?

A: Elements that gains electrons and form their respective anion are known as non-metals.   Seventeen…

Q: what are radioactive elements? Give examples

A: Radioactive elements:When an element is subjected to spontaneous degeneration of its nucleus…

Q: What are the atomic models, explain the most modern one

A:

Q: A certain isotope has a charge of +3 and has 33 protons and 42 neutrons in the nucleus. How many…

A: Consider the given information is as follows; Number of protons = 33 Number of neutrons = 42…

Q: List the three main subatomic particles?

A: Stable particles which Play important role formation of atoms of matters called as main subatomic…

Q: Where do elements get their names?

A:

Q: What defines an element?

A: An atom can be considered as the smallest unit of any matter. An atom is composed of certain…

Q: What is the electrical charge of water?

A: The compound given is water.

Q: Which statement about subatomic particles are true? Electrons are attracted to protons.

A: Electrons are negatively charge and protons are positively change particle, so by this opposite…

Q: What is an element?How are elements arranged in the periodic table?

A: The elements starting from hydrogen having atomic number 1 to the element with atomic number 118 are…

Q: An ion has 34 protons and a charge of 2-. How many electrons does this ion have

A: Given: Number of protons = 34. And charge on ion = -2.

Q: Boron occurs naturally as 10B and 11B. Which isotope is most abundant? (Refer to the Periodic…

A: The isotopes can be described as the types of the species which have equivalent atomic number…

Q: Copper, which has an average atomic mass of 63.546 amu, has two stable isotopes: copper-63 and…

A: Atomic mass of copper can be calculated using the following formula.

Q: How many isotopes does this element have?

A: From the graph, it is cleared that the number of isotopes of the unknown element is 5.

Q: Define atomic number, atomic weight, and isotope.

A: Elements are placed in the increasing order of their atomic number in the horizontal rows and…

Q: Create a timeline for the development of atomic theories from before the common era until the…

A: The extremely smallest particle of matter which cannot be further broken down to even smaller…

Q: Match each charge, mass, or description with the correct subatomic particle. Some descriptors match…

A: The atom has three sub-atomic particles namely electron, proton and neutron.

Q: Lithium naturally exists as two isotopes: lithium-6, with an abundance of 7.6%, and lithium-7, with…

A: The relative atomic mass of lithium = 6.9399 amu.

Q: Elements in the same period (row) have the Same number of what?

A:

Q: What are the atomic models

A:

Q: A sample of the element Phosphorus is shown to have a mass of 33 and a charge of -3. How many…

A: Since we know that in any elements at neutral state  Number of electrons = Number of protons =…

Q: Atomic Number Atomic Mass = : # of Protons : # of Protons + # of neutrons :: #of electrons : #of…

A:

Q: How many electrons are necessary to produce a charge of -1.0 C? What is the mass of this many…

A: SOLUTION: Step 1: An electron has a charge of -1.6 ×10-19 C. The no of electrons necessary to…

Q: What is the formula for carbon tetrachloride ?

A:

Q: List two elements found on the periodic table which are liquid at room temperature. (Please note…

A: The two liquid elements on the periodic table at room temperature are Mercury (Hg) and Bromine (Br).…

Q: Element Protons Neutrons Mass (atom) Carbon #protons? 12 Beryllium 4 #neutrons? element? 10…

A: For an element, the atomic number, Z, of an element is equal to the number of protons. The atomic…

Q: Complete the following information. If necessary, use the periodic table. Nuclear symbol =  Charge =…

A: Number of protons in an atom serves as identity of an element. number of protons in the nucleus is…

Q: How many protons, electrons and neutrons does Cl1?

A: In the question, we have been given a halide ion and we need to calculate the number of electrons,…

Q: How many electrons are in 1 coulomb?

A: Particles that reside inside an atom are called subatomic particles. These particles are electrons,…

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.