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Neodymium

19 electrons

## How do I calculate the number of electrons in an element?

The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules.

1. The number of protons in the nucleus of the atom is equal to the atomic number (Z).
2. The number of electrons in a neutral atom is equal to the number of protons.

## How do you calculate the number of atoms in class 11?

Hint: 1 mole of a substance contains 6.022×1023amount of that substance, which is Avogadro’s number. A mole is the amount of substance which has mass equal to the gram atomic mass or gram molecular mass. Formula used: Molecular mass=sum of atomic masses of all atoms present in that molecule.

## What will be the mass of one c12 atom in Gram?

Atomic mass, the quantity of matter contained in an atom of an element. It is expressed as a multiple of one-twelfth the mass of the carbon-12 atom, 1.× 10−23 gram, which is assigned an atomic mass of 12 units. In this scale 1 atomic mass unit (amu) corresponds to 1.× 10−24 gram.

## How many atoms are in 52g of he?

(iii) 52 g of He will contain 452×6. 023×1023=7. 82×1024 atoms.

## What is difference between 52u and 52g?

ans: 52u represents the atomic mass (i.e., mass of ane atom of He) of He while 52g shows molar mass ( i.e., mass of 1 mole of He) of He

## Which has maximum number of molecules?

Therefore, 2g H2has the maximum number of molecules.

## Which one of the following will have the largest number of atoms?

Hence, 1g lithium has the largest number of atoms.

## Which will contain large number of atoms 1 gram of gold or 1 gram of silver?

Answer. Answer: Hence, the number of atoms in 1g of silver are more than number of atoms in 1g of gold

## Which will have largest number of moles?

2 gram of H2. 2 gram of H2 has the maximum number of moles.

## How many grams of oxygen is present in 50g of CaCO3?

Calculate the number of oxygen atoms and its mass in 50 g of CaCO3. Solution — Molecular mass of CaCO3= 40+12+3×16 = 100 No. mole of CaCO3 = 50g/100g = 0.5 0.5 mole of CaCO3 contains 1.5 moles of oxygen atoms No. of oxygen atoms = 1.5 × 6.022×1023 = 9.033×1023 atoms Mass of Oxygen atoms = 1.5 × 16 = 24 g.

## How many atoms of oxygen are present in 100 grams of caco3?

Answer Expert Verified 100 g of Calcium Carbonate (100,000 mg of Calcium Carbonate) has 3 moles of Oxygen atoms = 3 x 6.022 x 10^23 Oxygen atoms

## How many grams of oxygen is present in 300g of caco3?

Explanation: Moles of calcium carbonate, 300⋅g100.09⋅g⋅mol−1 ≅ 3⋅mol . Given the elemental makeup, in such a quantity there are 3 moles of calcium, 3 moles of carbon, and 9 moles of oxygen

## How many atoms of oxygen are present in 50 grams of caco3?

Hence there are 9.033 X 1023 atoms of oxygen in 50g of CaCO3

## How many moles are present in 50 grams of calcium?

Thus 50 grams will be half a mole. Mark it as the brainliest answer if this helps

## How many atoms are present in h2so4?

Sulfuric acid contains 2 hydrogen atoms, 1 sulfur atom, and 4 oxygen atoms.

two atoms

## How many atoms does c6h12o6?

Answer and Explanation: There are 24 atoms in one molecule of C6 H12 06. This chemical compound has 6 atoms of carbon, 12 atoms of hydrogen, and 6 atoms of oxygen

six atoms

## How many phosphorus atoms are in sr3 po42?

Elemental composition of Sr3(PO4)2

Element Symbol #
Strontium Sr 3
Phosphorus P 2
Oxygen O 8

## How many atoms are in sr3 po42?

Composition of Strontium Phosphate – O8P2Sr3

Element Symbol # of Atoms
Strontium Sr 3
Phosphorus P 2
Oxygen O 8

## How many atoms are in 3ca3 po42?

Elemental composition of *3Ca3(PO4)2

Element Symbol #
Calcium Ca 9
Phosphorus P 6
Oxygen O 24

## What is the H in CA c2h3o2 2?

Elemental composition of Ca(C2H3O2)2

Element Symbol Mass percent
Calcium Ca 25.3392
Carbon C 30.3749
Hydrogen H 3.8236
Oxygen O 40.4623

2021-05-14