Which elements in each pair is more metallic? Silicon or aluminum

Q: The atomic number of an atom is determined by the number of in the atom. (a) protons (b) neutrons…

A: The fundamental building blocks of matter are known as atoms. They are composed of neutrally-charged…

Q: Which parts of an element do not vary in number?a. electronsb. neutronsc. protonsd. All of these…

A: Electrons are negatively charged. Protons are positively charged. Neutrons are neutral.

Q: Chlorine has seven electrons in its valence shell. It accepts an electron to complete its octet and…

A: The chloride ion acts as an electrolyte and is present in all bodily fluids. It helps in the…

Q: Generally YAC contains how many elements?a) 1b) 2c) 3d) 4

A: YAC stands for yeast artificial chromosomes and is widely used in the field of genetic engineering.…

Q: The mass number for an isotope is 14. This isotope could be: a carbon atom with 8 neutrons an oxygen…

A: Mass number of an atom is the sum of the number of protons and neutrons in the nucleus of the atom.…

Q: Which four chemical elements make up approximately 96% of living matter?

A: The concept of generation of life and living organisms from chemical compounds has been explained by…

Q: If you are told you have an element with an atomic number of 16 and its in group VIA. What does this…

A: In modern periodic table sulphur has atomic number 16 and it is a group VIA element.

Q: Which element is the most abundant element by mass in human body? carbon, oxygen, iron, hydrogen, or…

A: The human body is full of different kinds of elements and nutrients that take an essential part of…

Q: The atomic number on an element tells us the number of

A: An atom is made up of three kinds of subatomic particles called protons, neutrons, and electrons,…

Q: Which element is the world's lightest metal and increasingly a vital component of batteries used in…

A: Any metals heaviness and lightness depends upon the density of that metal.  Density is defined as…

Q: Which of the following items are pure elements—that is, made up of only one type of atom? Check all…

A: Our Earth is a planet that has abundant minerals. These minerals were formed as a result of the…

Q: how many atoms do we have in our body?

A: The human body contains hydrogen, oxygen, carbon, nitrogen and may other elements.

Q: A student is studying calcium, a highly reactive element that humans need for strong bones. Which…

A: Chemical reactivity is the tendency of an element to undergo chemical reaction.

Q: Distinguish between activity of metal and activity of nonmetal

A: Scientists classify elements based on their properties. Based on the chemical and physical…

Q: An isotope of sodium (Na) has a mass number of 22 and an atomic number of 11.how many neutrons does…

A:

Q: What is the basic units of matter and the defining structure of elements? a. Cell b. Atom c.…

A: Matter- It is any substance that takes up space, has volume and  has mass. It  exists in various…

Q: The atomic number of potassium (K) is 19 and the mass number is 39. How many neutrons does potassium…

A: Atomic number is defined as the number of protons in the nucleus of an atom . Mass number is defined…

Q: Which of the following levels in the shell model of an atom can hold up to two electrons?   A. The…

A: The model of the shell is partially similar to the model of the atomic shell that defines the…

Q: Elements have varying numbers of protons, neutrons, and electrons.True or false?

A: Atom is the smallest particle of an element that is composed of subatomic particles such as,…

Q: Which element is the world's lightest metal and increasingly a vital component of batteries used in…

A: Metals are solid opaque  elements that has good conductivity of heat and electricity. Lightness of…

Q: The atomic number on the periodic table tells us how many are in the atom. * O protons O neutrons O…

A: All biomolecules are made us of the basic chemical elements that why Biology and chemistry go hand…

Q: What is the smallest unit of an element that retains the properties of that element

A: An element is a pure product in chemistry that can not be broken down by chemical means, consisting…

Q: The mass number of an atom depends primarily on the number of protons and neutrons. positrons.…

A: An atom is the smallest unit of any matter. It has three subatomic particles; neutrons, protons, and…

Q: What are elements made of

A: Elements are atomic particles and elements are the smallest known particles except for subatomic…

Q: If 10 magnesium atoms and 10 chlorine atoms were allowed to bump into each other, could they combine…

A: Magnesium and Chlorine combine to form salt magnesium chloride, MgCl2, where one magnesium cation…

Q: In the accompanying figure, the atomic number refers to the:

A: The given is C (carbon) The atomic number is 6 The mass number is 12

Q: if 10 magnesium atoms and 10 chlorine atoms were allowed to bump into each other, could they combine…

A: The study of chemical reactions that occurs within living organisms is called biochemistry. This…

Q: Which elements would be more likely to make a compound with another element

A: In chemistry an element very basic part of any molecule and it is a pure substance consisting only…

Q: A sodium atom has 11 protons and 12 neutrons. What is the atomic number of sodium? Multiple Choice…

A: Atomic number is the proton number of a chemical element. It is represented by "Z".

Q: Choose an element from the periodic table that is found in the human body, and write five sentences…

A: All the living organisms are composed of mainly CHON. P and S are second most important elements.…

Q: Elements are.. O A pure substance When there is more than one atom O Made of two or more substances

A: The matter is made up of chemical substances that occupy space and it consists of a particular mass.…

Q: What will be the results if our body are lack/absence of elements?

A: There are several elements present in the body that are responsible for different purposes.

Q: If you add an electron to fluorine, what will result? A) a negatively charged anion O B) a different…

A: Anion: negatively charged ion. Cation: positively charged ion.

Q: Magnesium has an atomic number of 12 and an atomic mass of 24. Which of the following statements is…

A: Magnesium is a chemical element with the symbol Mg and atomic number 12.

Q: If an atom has an atomic number of 6 and an atomic mass of 14, that means it must have _____…

A: The atomic number is the number of electrons present in an atom.  The atomic mass number is defined…

Q: In the periodic table, the elements are arrangedaccording to ________ .a. size c. mass numberb.…

A: A periodic table is a tabular table. It displays all the chemical elements in this table. Over time…

Q: A(n). is the smallest unit of an element that retains all the properties of that element. O molecule…

A: Elements are substances that cannot be further broken into particles. An element consists of types…

Q: Which of the following has the highest iodine content?  Which of the following has the lowest…

A: Fatty acid: These are the most common lipids. Based on the type of bonds they are classified into…

Q: An element is a pure substance that cannot be broken down into other substance by physical or…

A: An element is any substance which is composed of only one kind of an atom.

Q: Which of the following plays the greatest role in chemical bonding number of protons in the valence…

A: chemical bonding is the interaction between two or more ions or atoms or molecules.  When the two…

Q: if 10 magnesium atoms and 10 chlorine atoms were allowed to bump into each other, could they…

A: Magnesium has electronic configuration- 12- 2,8,2 Chlorine has electronic configuration- 17- 2,8,7…

Q: Nonsilicates are a group of minerals that DO NOT contain what two elements? A. silver and gold B.…

A: Answer-B. Silicon and oxygen

Q: A mineral is a naturally occurring solid that is composed of many inorganic materials. Which of the…

A: Features of minerals Naturally occurring substance. Should not be man made Is  Composed of…

Q: What is formed when an atom loses or gains an electron? O a. ion O b. bond O C. molecule O d. a new…

A: Molecules of every substances are made up of small particles. These are called atoms. Bohr's model…

Q: Which mineral is a carbonate a compound that contains a -co3 group

A: Carbon dioxide is soluble in water. In a reversible reaction, it makes carbonic acid with water…

Q: Element Characteristics Easy to bend and shape • Good conductor of heat • Good conductor of…

A: The metals are substances that has high conductivity and high electricity.

Q: OCCURS IN WATER WITI 1. cobalt 2. strontium 3. selenium 4. vanadium

A: Osteoarthritis, also known as degenerative joint disease (DJD), is one of the most common type of…

Q: What is the purpose of subscripts in chemical formulas? So the chemist can multiply the chemical…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…